*The diagram has to do with the question*
Pls help

*The Diagram Has To Do With The Question*Pls Help

Answers

Answer 1
It’s b






Wgsystststsgdhdb

Related Questions

In the equation shown, what are the reactant(s)?
CsHot 0,7H2O+CO2
C=1
H = 8 H=2
0 = 2
C=3
O=3
wie
O C3H8

Answers

C3H8 + O2 (please give me brainliest$

If ice has a density of 0.92 g/ml what is the volume of 5,000g of ice?

Answers

Answer:

The answer is 5,434.8 cm^3

The volume corresponding to 5,000 g of ice with a density of 0.92 g/mL is 5.4 × 10³ mL.

The density (ρ) is an intrinsic property of matter. It is equal to the quotient between the mass (m) and the volume (V). If we have 5,000 g of ice with a density of 0.92 g/mL, its volume is:

[tex]\rho = m/V\\V = m/\rho = 5,000 g/(0.92 g/mL) = 5.4 \times 10^{3} mL[/tex]

The volume corresponding to 5,000 g of ice with a density of 0.92 g/mL is 5.4 × 10³ mL.

You can learn more about density here: https://brainly.com/question/21667661

What is the pH of a solution with (H+] = 1 x 103 M?

Answers

It is 5 hope this helps

Describe what happens to particles of matter as you cool the matter to absolute zero (0 K). In your description, be sure to explain the changes in kinetic energy and particle motion. ​

Answers

Answer:

the particles expand and the kinetic energy i think moves slower

Explanation:

Answer:

Absolute zero is the temperature at which the particles of matter (molecules and atoms) are at their lowest energy points. Some people think that at absolute zero particles lose all energy and stop moving. This is not correct. ... Scientists use lasers to slow atoms when cooling objects to very low temperatures.

1.Explain why the reactivity of group 7 decreases as you move down the group. Try to use the sentence starters here: When group 7 elements react, their atoms….

As you move down the group, the outer shells get…

Therefore the force of attraction between the shells and the nucleus is….

This makes attracting an extra electron…

Consequently, reactivity…​

Answers

Answer: The reactivity of group 7 decreases as we move down the group because:

Explanation:

The elements of group 7 that is fluorine to iodine. The halogens are non metals and they react with metals to gain electrons. The metals loose electrons and the non metal gains it.

As we move down the group  the atomic radius gets bigger( more electron and more proton) and as a result the outer shells move further away from the nucleus.

There is more distance between the negatively charged electrons and positively charged nucleus.

Therefore the force of attraction between the shells and nucleus is lesser or weaker.

This makes attracting an extra electron from metals very difficult which results in weaker reaction.

Consequently, the reactivity decreases as we move down the group 7

Where does the energy of a nuclear power plant come from?

A) the radiation released by unstable uranium isotopes
B) the heat energy released during nuclear fusion
C) the radiation released when hydrogen fuses into helium
D) the heat energy released during nuclear fission

Answers

Answer:

The heat energy released during nuclear fusion

The heat energy released during nuclear fusion. The correct option is D.

Thus, The Sun and other stars are powered by nuclear fusion reactions. A heavier nucleus is created when two light nuclei fuse together in a fusion reaction.

Because the mass of the resulting single nucleus is smaller than the combined mass of the two initial nuclei, the process produces energy. Remaining mass is converted to energy.

Why this happens is explained by Einstein's equation (E=mc2), which states in part that mass and energy can be transformed into one another. Fusion energy could be a significant source of energy generation if scientists can figure out how to use it in equipment on Earth.

Thus, The heat energy released during nuclear fusion. The correct option is D.

Learn more about Nuclear fusion, refer to the link:

https://brainly.com/question/33558814

#SPJ2

which statement describes the movement of carbon dioxide in the carbon cycle?

A. The gas leaves the biosphere as animals breathe in air.

B. The gas leaves the atmosphere as plants use it to make sugar.

C. The gas enters the cryosphere as ice sheets melt.

D. The gas enters the hydrosphere as sugar dissolves in water.

Answers

Answer:

C. The gas enters the cryosphere as ice sheets

Answer:

D

Explanation:

What is the relationship between distance from the Sun and period of
revolution for the planets in our Solar System?

Answers

Answer:

T^2 α r^3

Explanation:

The relationship between the period of revolution of planets and their mean distances from the sun is given by Kepler's third law.

Kepler's laws of planetary motion describe the orbits of objects around the sun.

This third law states that; "the square of the period of revolution of planets are proportional to the cubes of their mean distances from the sun. Hence; T^2 α r^3.

Where;

T = period of revolution of the planets

r = mean distance of the planet from the sun

50 points please help

Answers

Answer:

The answer is 20mph

Hope this helps!!!

This question was posted more than a month ago so... I guess I'll take the points if you don't mind?

can anyone help please ?

Answers

Answer:

The mass remains constant

Explanation:

Burning a wood is a chemical change which produces many products. According to the law of conservation of mass, matter is neither created nor destroyed in a chemical reaction.

This implies that the quantity of the product and reactants will remain the same before and after the reaction. When we write a balanced reaction equation for this process, we find that the number of moles are conserved and the same. So, this is replicated in the mass of the combining species and the product they form. For such a combination, mass is the same.

Explain why the available amount of water per person differs between countries.

Answers

Answer:

It's considered a limited resource because there is a limited amount of freshwater found on Earth's surface. Explain why the amount of water per person differs between countries. It differs because in the different countries it is distributed unevenly.

Explanation:

looked it up

How many grams of zinc oxide can be produced from 7.3 moles of oxygen? *
2Zn + O2 → 2Zno
1188.13 g Zno
81.379 g Zno
7.3 g Zno
O 2g Zno

Answers

Answer:

Mass = 1188.13 g

Explanation:

Given data:

Mass of ZnO produced = ?

Moles of oxygen = 7.3 mol

Solution:

Chemical equation:

2Zn + O₂       →      2ZnO

Now we will compare the moles oxygen and and ZnO.

               O₂          ;        ZnO

                1            :           2

              7.3          :           2/1×7.3 = 14.6 mol

Mass of ZnO:

Mass = number of moles × molar mass

Mass = 14.6 mol × 81.38 g/mol

Mass = 1188.13 g

In your opinion, should scientists clone the wooly mammoth? Explain why or why not.

Answers

Answer:

I think scientists should not clone the wooly mammoth because our environment is already working great without them and bringing them back has a chance to hurt the environment or even destroy it also wooly mammoths were exists about 3700 years ago and the world had changed A LOT from then so we could end up hurting the mammoth by putting it in a world that has changed a lot from when the wooly mammoth was actually alive.

The first order reaction,so2cl2 to so2+cl2,has a half life of 8.75 hours at 593k.How long will it take for the concentration of so2cl2 to fall to 12.5% of its initial value? 6.24hours 26.2hours 16.2hours 22.6hours

Answers

Answer: The time after which the concentration of [tex]SO_2Cl_2[/tex] fall to 12.5% of its initial value is 26.2 hours

Explanation:

Expression for rate law for first order kinetics is given by:

[tex]t=\frac{2.303}{k}\log\frac{a}{a-x}[/tex]

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant  = 100

a - x = amount left after decay process  = 12.5

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

[tex]t_{\frac{1}{2}}=\frac{0.693}{k}[/tex]

[tex]k=\frac{0.693}{8.75hour}=0.0792hour^{-1}[/tex]

b) for concentration to fall to 12.5 % of initial value  

[tex]t=\frac{2.303}{0.0792}\log\frac{100}{12.5}[/tex]

[tex]t=26.2hours[/tex]

The time after which the concentration of [tex]SO_2Cl_2[/tex] fall to 12.5% of its initial value is 26.2 hours

I need help fast...........

Answers

Answer:

I think its might be 1 because the ionic numbers for CA is +2 and for P its +3

Which celestial object's period of revolution is the same as its period of
rotation?

Answers

Answer:

MOON

Explanation:

ITS PERIOD OF REVOLUTION IS EQUAL TO PERIOD OF ROTATION

please hit the heart button

Most chemical reactions release energy or are exothermic. However, some reactions, such as some decompositions, absorb energy. These reactions can be best explained by which of these? A) Energy is destroyed in the chemical reaction. B) The products have less energy stored in their chemical bonds. C) The products have more energy stored in their chemical bonds. D) The reactants have the same energy stored in their chemical bonds.​

Answers

Answer:

C) The products have more energy stored in their chemical bonds.

Explanation:

In such reactions that absorb energy, the products have more energy stored in their chemical bonds.

For endothermic changes, heat is absorbed from the surrounding hence the surrounding becomes colder at the end of the changes.

The heat energy level of the products is higher than that of the reactants.

Exothermic reactions releases heat to the surroundings. The sum of heat contents of the products is less than that of the hat contents of the reactants. Examples of such processes are burning and dissolution.

equation invalid?
Al +202
→ A1203
O A. An atom of aluminum (Al) is created in the reaction.
B. An atom of oxygen (O) is destroyed in the reaction.
O C. The equation violates the Law of Conservation of Mass.
O D. All of the above.
1 View Gizmo

Answers

Answer:

B. an atom of oxygen o is destroyed in the reaction

How do covalent bonds form neutral compounds?

Answers

Answer:

Covalent bonds form when electrons are shared between atoms and are attracted by the nuclei of both atoms.

Help please!!
The half life of lutetium-117 is 6.75 days.
Calculate the percentage remaining after 27 days.

Answers

Answer:

6.25%

Explanation:

Given data:

Half life of lutetium-117 = 6.75 days

Percentage remaining after 27 days = ?

Solution;

Number of half lives = Time elapsed / half life

Number of half lives = 27 days / 6.75 days

Number of half lives = 4

At time zero = 100%

At first half life = 100%/2 = 50%

At second half life = 50%/2 = 25%

At 3rd half life = 25%/2 = 12.5%

At 4th half life = 12.5%/2 = 6.25%

How many grams do 3.6 × 10^20 atoms of sodium weigh?
Answer in units of g.

Second time posting as someone else answered incorrectly.

Answers

Answer:

13.749 x 10 -3 g

Explanation:

take the number of atoms that you have divided by Avogadro's number and then multiply by the molar mass of the element. :)

a) Find the gas speed of ammonia at 25.0 degrees Celsius. ______________


b) What is the rate of effusion of ammonia compared to silicon tetra bromide gas as the same temperature? __________________

Answers

a. 661.23 m/s

b.  the rate of effusion of Ammonia = 4.5 faster than Silicon tetra bromide

Further explanation

Given

T = 25 + 273 = 298 K

Required

a. the gas speed

b. The rate of effusion comparison

Solution

a.

Average velocities of gases can be expressed as root-mean-square averages. (V rms)  

[tex]\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}[/tex]

R = gas constant, T = temperature, Mm = molar mass of the gas particles  

From the question  

R = 8,314 J / mol K  

T = temperature  

Mm = molar mass, kg / mol  

Molar mass of Ammonia = 17 g/mol = 0.017 kg/mol

[tex]\tt v=\sqrt{\dfrac{3\times 8.314\times 298}{0.017} }=661.23~m/s[/tex]

b. the effusion rates of two gases = the square root of the inverse of their molar masses:  

[tex]\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }[/tex]

M₁ = molar mass Ammonia NH₃= 17

M₂ =  molar mass Silicon tetra bromide SiBr₄= 348

[tex]\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{348}{17} }=4.5[/tex]

the rate of effusion of Ammonia = 4.5 faster than Silicon tetra bromide

plssss help me I only have 10 mins.

Answers

Answer:

Scientists must collect accurate information that allows them to make evolutionary connections among organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.

Explanation:

This what I think

Answer:

C

Explanation:

Just like a Alligator or Croc, they evolved from the dinosuar's. The scientest KNOW THIs mainly because they have compared the fossil's of a crocidile THEN and a corcidile NOW (Just a example)

Hope this helps and pls mark brainlest!

What is the main function of the circulatory system?
A.
to eliminate waste from the body
B.
to distribute blood and nutrients throughout the body
C.
to support the body and allow movement
D.
to protect the body from infectious agents

Answers

B- is the answer


Hope this helps


Have a nice day~
i believe the correct answer would be B

Calculate the atomic mass of Copper if copper-63 is 69.17% abundant and Copper-65 is 30.83% abundant.

Answers

The atomic mass of Copper : 63.6166 amu

Further explanation

Given

Copper-63 is 69.17%

Copper-65 is 30.83%

Required

The atomic mass of Copper

Solution

The elements in nature have several types of isotopes

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.%  ...

The atomic mass of Copper = 0.6917 x 63 + 0.3083 x 65

The atomic mass of Copper = 43.5771 + 20.0395

The atomic mass of Copper = 63.6166 amu

A student places a small stone with a mass of 5 g into a graduated cylinder containing 50 mL of water. With the stone in the graduated cylinder, the water rises to 75 mL. What is the density of the stone? a. 0.07 g/mL b. 0.20 g/mL c. 5.00 g/mL d. 125.00 g/mL​

Answers

Answer:

0.20 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

volume = final volume of water - initial volume of water

volume = 75 - 50 = 25 mL

From the question we have

[tex]density = \frac{5}{25} = \frac{1}{5} = 0.2 \\ [/tex]

We have the final answer as

0.20 g/mL

Hope this helps you

How are you able to see cells?
With contemporary light microscopes.

Answers

Answer:

Contemporary light microscopes are able to magnify objects up to about a thousand times. Since most cells are between 1 and 100 μm in diameter, they can be observed by light microscopy, as can some of the larger subcellular organelles, such as nuclei, chloroplasts, and mitochondria.

Which solution would have the highest boiling point? A. 1.3 m ammonium sulfide (aq) B. 2.0 carbon tetrachloride (aq) C. 1.5 m copper (II) sulfate(aq) D.2.2 m sucrose (aq)

Answers

Answer:

C. 1.5 m copper(II) sulfate(aq)

Explanation:

I say this because a copper is a metal and a metal always has the highest melting and boiling point. A metal is also malleable, can dissolve in water, and a good conductor of electricity. All the other answers have all the nonmetals in them like Carbon, Oxygen, Chlorine, and etc. Nonmetals do not have a high boiling point. They basically are brittle. Therefore, the final answer is C.

What kinds of shapes can carbon based molecules form?

Answers

Answer:

Straight chains, branched chain and rings.

Explanation:

Hope this helps :)

Answer/Explanation:

Carbon based molecules tend to form in chain like patterns. So, carbon molecules could/would form a chain that branches out, a chain that travels in a straight or constant direction, and a chain that connects into a loop style.

Are electrons exchanged between ionic or covalent bonds

Answers

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals.

Ionic bonds is the answer
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