! 20 points !need answer FAST!
In nuclear reactions, how can huge amounts of energy be produced?
A. By converting chemical energy into nuclear energy
B. By releasing thermal energy in uranium
C. By creating energy from the surrounding space
D. By destroying matter to create energy

Answers

Answer 1

Answer:

C.

Explanation: In nuclear fission and fusion reactions, some of the energy in matter is converted to energy.  If you weigh the reactants and the products, the products will weigh less than the reactants.  This is called the mass defect and is the result of turning matter into energy.

Answer 2

Answer:

D.

Explanation:

With the Fat Boy and Little Boy nuclear bombs that were drop on Japan, They used a little gun (inside the bomb) that shot a little slug. this hit and caused a chain reaction that caused the bomb to detonate. This released much energy. Destroying much of the two cities when the bombs were dropped.


Related Questions

Why do we have to shield astronauts from solar wind?

Answers

Preventing exposure to high-energy particles is essential for the short-term success of the mission, and for the long-term health of the astronaut.

What is the role of light in photosynthesis?
Group of answer choices

Light provides the energy needed to convert water and carbon dioxide into sugar and oxygen.

Light does not play a role in photosynthesis.

Light splits into hydrogen and oxygen. The oxygen becomes waste but the hydrogen reacts with the light to produce glucose.

Light is absorbed by the plant and combines with water to make glucose.

Answers

Answer:

d

d

Explanation:d

A blue whale has a length of 28,578 millimeters. What is the length of a blue whale in kilometers? Show your work below by writing the conversion factors you use to solve this question.

Answers

Answer:

Length of whale in km = 0.028578 km

Explanation:

Given:

Length of whale = 28,578 millimeter

Find:

Length of whale in km

Computation:

We know that;

1 km = 1,000,000 mm

So,

Length of whale in km = 28,578 / 1,000,000

Length of whale in km = 0.028578 km

Answer:

The answer is 0.28578 km, and the conversion is below in the explanation.

Explanation:

28578 mm * (1 meter/1000 millimeters) * (1 kilometer/1000 meters)

The millimeter units will cancel out, then the meter units will cancel out, leaving you with 28578/1000, then divide again by 1000.  The answer is 0.028578 km.

What is the electron configuration of the iodide ion?

A. 1s22s22p63s23p63d104s24p64d105s2

B. 1s22s22p63s23p63d104s24p6

C. 1s22s22p63s23p63d104s24p64d10

D. 1s22s22p63s23p63d104s24p64d105s25p6


Please try and put the answer first and then give an explanation.

Answers

Answer:

D. 1s2,2s2,2p6,3s2,3p6,3d10,4s2,4p6,4d10,5s2,5p6

Explanation:

Hello!

In this case, since the standard iodine atom has 53 electrons, when it forms the iodide ion it is known it gains one spare electron so now it has 54; it means we need to write the new electron configuration up to 54 as shown below:

[tex]I^-:1s^2,2s^2p^6,3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^{10},5p^6.[/tex]

Thus, the answer should be:

D. 1s2,2s2,2p6,3s2,3p6,3d10,4s2,4p6,4d10,5s2,5p6

Even when the order is not the adequate one.

Regards!

Answer:

1s2,2s2,2p6,3s2,3p6,4s2, 3d10,4p6,5s2,4d10,5p6 is techically more correct, but in this case the closest answer given by the problem is D.

Explanation:

Note that in thereory, 4s2 is before 3d10 and 5s2 is before 4d10. However, this is not one of the choices, so the answer is D.

The number of significant figures in 3.010 is

Answers

Answer:

The calculator shows 2280.3972, which rounds off to 2280, three significant figures. In scientific notation, this answer would be 2.28 x 103. Note this last use of scientific notation to indicate significant figures where otherwise you might not realize they were significant.

Explanation: I hope my answer has come to your help. God bless and have a nice day ahead!

Suppose "Element X" has a molar mass of 38.5 g/mol. How many atoms of Element X would be present in 2.78 mol?

Answers

Answer:

16.74×10²³ atoms

Explanation:

Given data:

Number of moles of X = 2.78 mol

Number of atoms = ?

Solution:

According to Avogadro number.

1 mole of any substance contain 6.022×10²³ atoms. Thus,

2.78 mol × 6.022×10²³ atoms / 1 mol

16.74×10²³ atoms

The number 6.022 × 10²³ is called Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Which of the following is not a product of the reaction of zinc metal with nitric acid?
A. H2O
B. Zn2+
C. H2
D. NH4+
E. All of the above species are products.

Answers

Answer:

A. H2O

Explanation:

The balanced ionic equation for the reaction is:

[tex]Zn^{2+} + 2H^{+} NO_{3} ^{-1}[/tex] → [tex]Zn^{2+} (NO_{3} )^{-1} _{2} + H^{2+} _{2}[/tex]

This implies that the products of the reaction are zinc nitrate and hydrogen gas only.

Therefore, the outlier from the options is water (H2O)

Let me know if you have any other questions.

What is an example of a compound that contains fluorine?

Answers

Answer:

sodium fluoride

Explanation:

30 POINTS HELPP PLEASE

Answers

1: selective breeding

2:traits

3: crop species

4: domestic

5: diverse

6: artificial

7: uniform

in your opinion if the answer is correct please like n mark MI s brain list

Anyone have a nursing major

Answers

Answer:

i maybe have one

Explanation:

Would you expect molten sodium chloride to conduct electricity? why or why not?

Answers

Yes

When molten, sodium chloride is separated into its ions. These ions can carry a charge which means that sodium chloride can conduct electricity.

In order to conduct electricity a substance must have charge particles, such as electrons and ions, that are free to move freely through it. ... However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity.

How many atoms are found in the chemical formula below?*
Al2(SiO3)2

Answers

Answer:

10 atoms

Explanation:

To find out the number of atoms: MULTIPLY all the SUBSCRIPTS in the molecule by the COEFFICIENT.

A 23.9 g sample of an unknown metal is heated from 41.2C to 68.9C. During the process the
metal absorbs 1110 Joules. Calculate the specific heat of the metal.

Answers

Answer:

1.677 J/gºC

Explanation:

From the question given above, the following data were obtained:

Mass (M) = 23.9 g

Initial temperature (T₁) = 41.2 °C

Final temperature (T₂) = 68.9 °C

Heat (Q) absorbed = 1110 J

Specific heat capacity (C) of metal =?

Next, we shall determine the change in the temperature of the metal. This can be obtained as follow:

Initial temperature (T₁) = 41.2 °C

Final temperature (T₂) = 68.9 °C

Change in temperature (ΔT) =?

ΔT = T₂ – T₁

ΔT = 68.9 – 41.2

ΔT = 27.7 °C

Finally, we shall determine the specific heat capacity of the metal as follow:

Mass (M) = 23.9 g

Heat (Q) absorbed = 1110 J

Change in temperature (ΔT) = 27.7 °C

Specific heat capacity (C) of metal =?

Q = MCΔT

1110 = 23.9 × C × 27.7

1110 = 662.03 × C

Divide both side by 662.03

C = 1110 / 662.03

C = 1.677 J/gºC

Therefore, the specific heat capacity of the metal is 1.677 J/gºC

How many moles are in 75.0 grams of nitrogen gas, N2?

Answers

Given:                                                                                                                      

Mass of Nitrogen (N₂) gas = 75 grams

Finding the number of moles of N₂:                                                                    

We know that the molar mass of N₂ is 28 grams/mole

Number of moles = Given mass / Molar mass

Number of moles = 75 / 28

Number of moles = 2.68 moles

Hence, there are 2.68 moles in 75 grams of Nitrogen Gas

How many grams of ammonia(NH3) are produced from 6 moles of nitrogen. (Show all work)

Answers

Answer:

Mass = 204 g

Explanation:

Given data:

Mass of ammonia produced = ?

Number of moles of nitrogen = 6 moles

Solution:

Chemical equation;

N₂ + 3H₂    →    2NH₃

now we will compare the moles of nitrogen and ammonia.

               N₂        :          NH₃

                1          :            2

               6          :          2/1×6 = 12

Mass of ammonia;

Mass = number of moles × molar mass

Mass = 12 mol × 17 g/mol

Mass = 204 g

indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.
a. Lemon juice
b. Water
c. Aqueous solution of MgO
d. Aqueous solution of Na2O ​

Answers

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

Which of the following atoms is smallest: nitrogen, phosphorus, or arsenic?

Answers

Answer:

arsenic

Explanation:

nitrogen=155pm

phosphorus=195pm

arsenic =between 38 μm and 25 mm

kinetic energy, elastic potential energy, and gravitational potential energy are all forms of

a. nuclear energy

b. chemical energy

c. mechanical energy

d. internal energy

Answers

Explanation:

the answer is internal energy..much like rubbing hands 2gether to make them warmer..

Question:
What is protecting us from the solar wind?

Answers

Answer:

The magnetic field

Explanation:

Air, Sea water, alloy afe the examples of

a) Compound
b) Mixture
c) Element
d) Molecule​

Answers

Answer:

B. Mixture

because air,sea water and alloy are example of Mixture

Compare and contrast the thermal capacity and transfer of solids, liquids, and gases

Answers

Answer:

किसी पदार्थ की ऊष्मीय चालकता को प्रति इकाई तापमान अंतर के प्रति इकाई क्षेत्र की सामग्री की एक इकाई मोटाई के माध्यम से गर्मी हस्तांतरण की दर के रूप में परिभाषित किया गया है। किसी पदार्थ की ऊष्मीय चालकता इस बात का माप है कि उस पदार्थ में कितनी तीव्र ऊष्मा प्रवाहित होगी। थर्मल चालकता के लिए एक बड़ा मूल्य इंगित करता है कि सामग्री एक अच्छा गर्मी कंडक्टर है, और एक कम मूल्य इंगित करता है कि सामग्री एक खराब गर्मी कंडक्टर या इन्सुलेटर है। कमरे के तापमान पर शुद्ध तांबे की तापीय चालकता 401 W / m है। K, जो इंगित करता है कि एक 1m मोटी तांबे की दीवार 401 W / m 2 की दर से गर्मी का संचालन करेगीप्रति दीवार के क्षेत्र का अंतर दीवार के पार तापमान अंतर। चित्रा 2.3 सामान्य तापमान और दबाव में पदार्थ के विभिन्न राज्यों के लिए तापीय चालकता की सीमा को दर्शाता है। एक ठोस की ऊष्मीय चालकता, गैस की तुलना में चार गुना अधिक परिमाण की हो सकती है। यह प्रवृत्ति काफी हद तक दोनों राज्यों के बीच अंतर-संबंधी अंतर के कारण है।

ठोस राज्य

सामग्रियों के आधुनिक दृष्टिकोण में, एक ठोस में मुक्त इलेक्ट्रॉनों और एक आवधिक व्यवस्था में बाध्य परमाणुओं का समावेश हो सकता है जिसे जाली कहा जाता है। तदनुसार, थर्मल ऊर्जा का परिवहन दो प्रभावों के कारण होता है: मुक्त इलेक्ट्रॉनों का पलायन और जाली कंपन तरंगें। ये प्रभाव योगात्मक हैं, जैसे कि तापीय चालकता k , इलेक्ट्रॉनिक घटक k e और समरूप घटक k l का योग है

k = k e + k l

(2.7)

सामान्य तापमान और दबाव में विभिन्न राज्यों के लिए थर्मल चालकता की 2.3 रेंज चित्रा

k e विद्युत प्रतिरोधकता के व्युत्क्रमानुपाती होता है । शुद्ध धातुओं के लिए, जो कम के हैं , k e , k l की तुलना में बहुत बड़ा है । इसके विपरीत, मिश्र धातुओं के लिए, जो कि काफी बड़े होते हैं , k l से k का योगदान अब नगण्य नहीं है। गैर-धात्विक ठोस के लिए, k को मुख्य रूप से k l द्वारा निर्धारित किया जाता है , जो कि जाली के परमाणुओं के बीच परस्पर क्रिया की आवृत्ति पर निर्भर करता है। जाली व्यवस्था की नियमितता का k l पर महत्वपूर्ण प्रभाव पड़ता है , क्रिस्टलीय (सुव्यवस्थित) सामग्री की तरह, क्वार्ट्ज जैसी सामग्री में कांच जैसी अनाकार सामग्री की तुलना में अधिक ऊष्मीय चालकता होती है। वास्तव में, क्रिस्टलीय के लिए, गैर-धात्विक ठोस जैसे कि हीरा और बेरिलियम ऑक्साइड, k l काफी बड़े हो सकते हैं, जो कि अच्छे कंडक्टरों से जुड़े k के मूल्यों से अधिक होते हैं , जैसे कि एल्यूमीनियम।

इन्सुलेशन सिस्टम

थर्मल इंसुलेशन में कम तापीय चालकता वाली सामग्री शामिल होती है, जो एक कम प्रणाली वाली तापीय चालकता को प्राप्त करने के लिए संयुक्त होती है। फाइबर-, पाउडर-, फ्लेक-टाइप इंसुलेशन में, ठोस पदार्थ को पूरी तरह से एक एयर स्पेस में फैलाया जाता है। ऐसी प्रणालियों को एक प्रभावी तापीय चालकता की विशेषता होती है , जो ठोस पदार्थ की तापीय चालकता और सतह विकिरणकारी गुणों पर निर्भर करती है, साथ ही साथ हवा या शून्य स्थान की प्रकृति और मात्रात्मक अंश। प्रणाली का एक विशेष पैरामीटर इसकी थोक घनत्व (ठोस द्रव्यमान / कुल मात्रा) है, जो उस तरीके पर दृढ़ता से निर्भर करता है जिसमें ठोस सामग्री परस्पर जुड़ी हुई है।

द्रवित अवस्था

चूंकि इंटरमॉलिक्युलर स्पेसिंग बहुत बड़ी होती है और अणु की गति ठोस अवस्था की तुलना में द्रव अवस्था के लिए अधिक यादृच्छिक होती है, इसलिए थर्मल एनर्जी ट्रांसपोर्ट कम प्रभावी होता है। इसलिए गैसों और तरल पदार्थों की तापीय चालकता ठोस पदार्थों की तुलना में छोटी होती है।

ऊष्मीय विसरणशीलता

गर्मी हस्तांतरण समस्याओं के हमारे विश्लेषण में, पदार्थ के कई गुणों का उपयोग करना आवश्यक होगा। इन गुणों को आम तौर पर थर्मोफिजिकल गुणों के रूप में संदर्भित किया जाता है और इसमें दो अलग-अलग श्रेणियां, परिवहन और थर्मोडायनामिक गुण शामिल होते हैं। परिवहन गुणों में प्रसार दर गुणांक जैसे कि के, थर्मल चालकता (गर्मी हस्तांतरण के लिए), और , गतिज चिपचिपापन (गति हस्तांतरण के लिए) शामिल हैं। दूसरी ओर, थर्मोडायनामिक गुण, एक प्रणाली के संतुलन की स्थिति से संबंधित हैं। घनत्व ( ) और विशिष्ट ऊष्मा ( C p ) दो ऐसे गुण हैं जिनका उपयोग थर्मोडायनामिक विश्लेषण में बड़े पैमाने पर किया जाता है। उत्पाद सी पीआम तौर पर वॉल्यूमेट्रिक ताप क्षमता को कहा जाता है , जो थर्मल ऊर्जा को स्टोर करने के लिए एक सामग्री की क्षमता को मापता है। क्योंकि बड़े घनत्व के पदार्थों को आमतौर पर छोटे विशिष्ट हीट्स, कई ठोस और तरल पदार्थों की विशेषता होती है, जो कि बहुत अच्छा ऊर्जा भंडारण मीडिया है, इसमें तुलनीय ताप क्षमता होती है। हालांकि उनकी बहुत छोटी घनत्व के कारण, गैसें थर्मल ऊर्जा भंडारण के लिए खराब अनुकूल हैं।

ऊष्मा अंतरण विश्लेषण में, ऊष्मा चालकता के लिए तापीय चालकता का अनुपात एक महत्वपूर्ण गुण है जिसे तापीय विवर्तनशीलता कहा जाता है , जिसमें m 2 / s की इकाइयाँ होती हैं ।

(2.8)

यह तापीय ऊर्जा को संग्रहीत करने की क्षमता के सापेक्ष तापीय ऊर्जा का संचालन करने के लिए एक सामग्री की क्षमता को मापता है। बड़ी की सामग्री उनके थर्मल वातावरण में बदलाव के लिए जल्दी से प्रतिक्रिया देगी, जबकि छोटे की सामग्री अधिक सुस्त प्रतिक्रिया देगी, एक नई संतुलन स्थिति तक पहुंचने में अधिक समय लेगी।

why is water a polar covalent molecule.

Answers

Water is a Polar Covalent Molecule

The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).

thank me and mark me as brainliest

What does it take in order for plates to move?

Answers

Answer:

Earth's thin outer shell is broken into big pieces called tectonic plates. These plates fit together like a puzzle, but they're not stuck in one place. They are floating on Earth's mantle, a really thick layer of hot flowing rock. The flow of the mantle causes tectonic plates to move in different directions.

Explanation:

1. A gas expands and does p-v work on the surroundings equal to
279j. At the same time it absorbs, 216j of heat from the surroundings. What
is the change in energy of the system?


Please answer if yk

Answers

The change in energy of the system : -63 J

Further explanation

Given

279 J work

216 J heat

Required

The change in energy

Solution

Laws of thermodynamics 1

ΔU=Q+W

Rules :

receives heat, Q +  releases heat, Q -  work is done by a system, W -  work is done on a system, W +  

a gas work on the surrounding : W =-279 J

a gas absorb heat from surrounding : Q = +216 J

Internal energy :

= -279+216

= -63 J

Draw a Lewis structure for HCCl3 . Include all hydrogen atoms and show all unshared pairs and the formal charges, if any. Assume that bonding follows the octet rule.

Answers

Answer:

See answer below

Explanation:

First, let's explain what a Lewis structure is.

A lewis structure in short words is a draw of an atom or molecule showing how the electrons bond with another electrons of atoms, and also shows the unshared pair of electrons, which are the electrons that do not bond in the molecule. In the case of an atom, it shows all the available electrons it has to be shared and bonded with another atom to form a molecule.

With this said, in order to draw the lewis structure we need to know how many electrons the atoms involved have. To know this, we need to write the electronic configuration of the atoms, based on it's atomic number.

In the case of Hydrogen (Z = 1), Carbon (Z = 6) and Cl (Z = 17):

[H] = 1s¹     1 electron available.

[C] = 1s² 2s² 2p²   In this case, we have 4 electrons.

[Cl] = 1s² 2s² 2p⁶ 3s² 3p⁵  In this case, 7 electrons.

Now that we have the configuration, and the available electrons, we need to draw the atoms. The Carbon is the more electronegative atom of them, so, the bonding will be formed based on this atom as the central. So the other atoms will just bond and shared a pair of electron with the carbon. The HCCl₃ can be treated as CH₄, with a tetrahedrical form.

The picture below shows the lewis structure.

Hope this helps

i need help with this

Answers

I highly believe it would be D
Because yes it does happen above water but it’s not just that, and the other two don’t seem correct. So sorry it’s not correct but I believe it is D

Select the compound with the lowest lattice energy.
A. CsBr(s)
B. NaCl(s)
C. SrO(5)
D. CaO(s)
E. KBr(s)

Answers

Answer:

A. CsBr(s)

Explanation:

we will get here compound with the lowest lattice energy

solution

As we know that Lattice energy is always proportional to the charge of ions and it is inversely proportional to the size of ions.

so that by the smallest charge and the largest size give us the lowest lattice energy and that charge and size is express as here as

Charge

Cs (+1), K(+1), Na (+1), Cl(-1), Br(-1), Sr(+2), Ca(+2), O(-2)     .......................1

and

Size

Na+ < Ca2+ < K+ < Sr2+ < Cs+, O2- < Cl- < Br-                ..........................2

so that here

correct answer is A. CsBr

The CsBr has the smallest charge and maximum size of the ions, the lattice energy of the compound has been the lowest. Thus option A is correct.

Lattice energy can be defined as the amount of energy required to remove a mole of ion to its gaseous state.

The lattice energy has been dependent on the charge and size of the ions.

Higher charge = Higher lattice energy

Higher size = Lower lattice energy

In CsBr, the charge of Cs has been +1, and the size of Br has been the smallest among the given.

In NaCl, the charge of Na has been +1,  and the size of Cl has been smaller than Br.

In SrO, the charge of Sr has been +2, and the size of O has been smaller than Cl.

In CaO, the charge of Ca has been +2, and the size of O has been smaller than Cl.

In KBr the charge of K has been +1, and the size of Br has been the smallest among the given. However, the size of the K ion has been smaller than the Sr atom.

Since the CsBr has the smallest charge and maximum size of the ions, the lattice energy of the compound has been the lowest. Thus option A is correct.

For more information about lattice energy, refer to the link:

https://brainly.com/question/17011733

Changes in temperature can often cause a change in the state of matter of objects. A decreasein temperature causes which of the following to happen?

A liquids will boil. B Water will freeze. C Wax will melt. D Solids will turn to gas.
PLS give meh answer

Answers

Answer:

B. Water will freeze

because the latent heat of vapourization decreases.

1) A 10g sample of H2(g) reacts with a 22g sample of O2(g) according to

the equation: _H2(3)+ -_02(3)→ _H,0(1)

Which reactant is limiting? Which is in excess?

Answers

Answer:

H₂ is excess reactant and O₂ the limiting reactant

Explanation:

Based on the chemical reaction:

2H₂(g) + O₂(g) → 2H₂O

2 moles of H₂ react per mole of O₂

To find limiting reactant we need to convert the mass of each reactant to moles:

Moles H₂ -Molar mass: 2.016g/mol-:

10g H₂ * (1mol / 2.016g) = 4.96 moles

Moles O₂ -Molar mass: 32g/mol-:

22g O₂ * (1mol / 32g) = 0.69 moles

For a complete reaction of 0.69 moles of O₂ are needed:

0.69mol O₂ * (2mol H₂ / 1mol O₂) = 1.38 moles of H₂

As there are 4.96 moles,

H₂ is excess reactant and O₂ the limiting reactant

how do you separate amixture by using fractional distillation​

Answers

Answer:Fractional distillation is a method for separating a liquid from a mixture of two or more liquids. For example, liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points.

Explanation:

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