How do chemical reactions turn substances into new substances?

help! how do chemical reactions turn substances into new substances?

Answer:

I think you got it right witth g

Explanation:

Answer:

Explanation:

Isotopes differ in the number of neutrons; in ions the number of electrons is different from the number of protons. Isotopes are atoms that have the same number of protons but different numbers of neutrons.

Answer:

A force is being applied to the mass.

Answer:

A force being applied to the mass is the correct answer

Explanation:

Answer:

well they form by heat and pressure

Answer:

They form when they are under extreme heat and pressure.

Explanation:

Answer:

A bond forms between two non metals is covalent

Explanation:

For example Chlorine Cl is a non metal bond in Cl - Cl is covalent

Answer:

2Na3PO4 + Al2(CrO4)3

Explanation:

these are the products

The balanced equation is 3 Na₂CrO₄ + 3 AlPO₄ ⇒ 2 Na₃PO₄ + Al₂(CrO₄)₃.

Let's consider the unbalanced chemical equation that occurs between Na₂CrO₄ and AlPO₄. This is a double displacement reaction.

Na₂CrO₄ + AlPO₄ ⇒ Na₃PO₄ + Al₂(CrO₄)₃

We will balance it using the trial and error method.

First, we will balance Na atoms by multiplying Na₂CrO₄ by 3 and Na₃PO₄ by 2.

3 Na₂CrO₄ + AlPO₄ ⇒ 2 Na₃PO₄ + Al₂(CrO₄)₃

Finally, we get the balanced equation by multiplying AlPO₄ by 3.

3 Na₂CrO₄ + 3 AlPO₄ ⇒ 2 Na₃PO₄ + Al₂(CrO₄)₃

The balanced equation is 3 Na₂CrO₄ + 3 AlPO₄ ⇒ 2 Na₃PO₄ + Al₂(CrO₄)₃.

You can learn more about balancing equations here: https://brainly.com/question/7181548

Answer:

80

Explanation:

ignore

Answer:

what is this

Explanation:

Answer:

we have to double the pressure.

Explanation:

b/c according to boyle's" the volume of a given mass of gas is inversely proportional to its pressure in a constant temperature.

P1*V1=P2*V2

we have P1=1 atm because it is at STp

V1=50L

V2=25L because we want to cut the volume of the gas in half .

and we can find P2

from the above formula we have P2=P1*V1/V2

P2=1*50/25=50/25=2

so when we doubled the pressure the volume will be halved.

Explanation:

D.the electrons in the wire begin to flow

Answer:

I think iron sorry if its wrong goodluck!

Answer:

15.1L

Explanation:

Given parameters:

Initial volume  = 2.1L

Initial pressure = 3.6atm

Initial temperature  = 200K

Final pressure  = 1 atm

Final temperature  = 400K

Unknown:

Final volume of the sample  = ?

Solution:

To solve this problem, we are going to use the general gas law or the combined gas law which is expressed below:

           [tex]\frac{P_{1} V_{1} }{T_{1} } = \frac{P_{2} V_{2} }{T_{2} }[/tex]

P, V and T are pressure, volume and temperature

1 and 2 are the initial and final states

Now;

        [tex]\frac{2.1 x 3.6}{200}[/tex]   = [tex]\frac{1 x V_{2} }{400}[/tex]  

          200V₂  = 3024

                 V₂ = 15.1L

Answer:

15.1L

Explanation:

Given parameters:

Initial volume  = 2.1L

Initial pressure = 3.6atm

Initial temperature  = 200K

Final pressure  = 1 atm

Final temperature  = 400K

Unknown:

Final volume of the sample  = ?

Solution:

To solve this problem, we are going to use the general gas law or the combined gas law which is expressed below:

P, V and T are pressure, volume and temperature

1 and 2 are the initial and final states

Now;

          =  

         200V₂  = 3024

                V₂ = 15.1L

Answer:

12% but u can put 8%

Explanation:

Answer:

i believe it is b as well

Explanation:

Answer:

d) NH4Cl (aq) + KOH (aq) → KCl (aq) + NH3(g) + H20 (1)

Explanation:

The formula for Amonnium Chloride is NH4Cl.

The formula for Pottasium Hydroxide is KOH.

The formula for Pottasium Chloride of KCL.

The formula for Ammonia gas is NH3.

And as everyone knows the formula of water is H20.

Hope this helps :)

A balanced chemical equation obey the law of conservation of mass. According to this law, the mass can neither be created nor be destroyed. Here  NH₄Cl (aq) + KOH (aq) → KCl (aq) + NH₃(g) + H₂0 (1) the correct equation. The correct option is D.

A chemical equation in which the number of atoms of reactants and products are equal on both sides of the equation is defined as the balanced chemical equation. The numbers which are used to balance the chemical equation are called coefficients.

The substances which appear on the left hand side of the equation are called the reactants whereas the substances that appear on the right hand side of the equation are called the products.

The reaction between Ammonium chloride and Potassium hydroxide is given as:

NH₄Cl (aq) + KOH (aq) → KCl (aq) + NH₃(g) + H₂0 (1)

Thus the correct option is D.

To know more about chemical equation, visit;

https://brainly.com/question/19626681

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Answer:

circulatory system

Explanation:

Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis.

Answer:



Explanation:

Diffuse water molecules can persist at the Moon's sunlit surface, as discovered by NASA's SOFIA observatory in 2020. Gradually water vapor is decomposed by sunlight, leaving hydrogen and oxygen lost to outer space. Scientists have found water ice in the cold, permanently shadowed craters at the Moon's poles.

The Ka : 1.671 x 10⁻⁷

Given

Reaction

HA (aq) + H2O (l) ←→ A- (aq) + H3O+ (aq).

0.3 M HA

pH = 3.65

Required

Ka

Solution

pH = - log [H3O+]

[tex]\tt [H_3O^+]=10^{-3.65}=2.239\times 10^{-4}[/tex]

ICE method :

HA (aq)        ←→   A- (aq)    +    H3O+ (aq).

0.3                           0                 0

2.239.10⁻⁴           2.239.10⁻⁴   2.239.10⁻⁴

0.3-2.239.10⁻⁴    2.239.10⁻⁴    2.239.10⁻⁴

[tex]\tt Ka=\dfrac{[H_3O^+][A^-]}{[HA]}\\\\Ka=\dfrac{(2.239.10^{-4}){^2}}{0.3-2.239.10^{-4}}\\\\Ka=1.671\times 10^{-7}[/tex]

Answer:

Explanation:

The notations for electronic structure of the atom is based upon the application of quantum numbers which specifies the order of filling of atomic orbitals by electrons. There are 4 quantum numbers that include...

Principle QN (n) => specifies location of electron as to major energy level or, ring about the atom of interest.

Orbital QN (l) => specifies the shape of the orbital containing the electron

   s => sphere => holds 2 electrons

   p => figure eight => holds up to 6 electrons

   d => overlapping figure eights => holds up to 10 electrons

   f => multiple overlapping figure eights => holds up to 14 electrons

The order of filling follows the Aufbau Principle that electrons enter the atomic orbital with the lowest available energy content. This order of filling from low energy to higher energies follows the Aufbau Diagram.

This order theoretically can go to infinity, but the scientific community only knows of 7 major energy levels; i.e., the 7 rows of the periodic table. See attached Aufbau diagram and follow the arrows in order from low energy to high energy. Use superscripts for number of electrons equal to atomic number of element of interest.  

H: 1s¹

O: 1s²2s²2p⁴

Al: 1s²2s²2p⁶3s²3p³

Ag: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d⁹

Answer:

Uranus and Neptune

Explanation:

Answer:

No, scientists did not accept Wegener's theory

Explanation:

In a book titled; "The Origin of Continents and Oceans", published in 1915, Wegener introduced his ideas about the theory of continental drift.

According to his idea, "all the continents were once joined together in an "Urkontinent" before breaking up and drifting to their current positions"(live science).

Though some of his ideas were correct, some of them were also quite wrong. Scientists rejected his idea because he did not detail any mechanism by which the continental drift occurs.

Answer: The daughter nuclide formed is Plutonium -243

Explanation:

Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.

[tex]^A_Z\textrm{X}\rightarrow ^{A-4}_{Z-2}\textrm{Y}+^4_2{\alpha}[/tex]

where A - mass number

Z - atomic number

X and Y are symbols of elements

For alpha decay of curium-247,

[tex]^{247}_{96}\textrm{Cm}\rightarrow ^{243}_{94}\textrm{Pu}+^4_2{\alpha}[/tex]

The daughter nuclide formed is Plutonium -243

Answer:

A decade is 10 years. Therefore you must first multiply ten by five to get 50. After you multiply the 12 months in a year by the 50 years. Your answer should be 600

Explanation:

Answer:its d

Explanation:just took it

Answer:

87.75%

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2Na + Cl₂ —> 2NaCl

Next, we shall determine the masses of Na and Cl₂ that reacted and the mass of NaCl produced from the balanced equation. This can be obtained as follow:

Molar mass of Na = 23 g/mol

Mass of Na from the balanced equation = 2 × 23 = 46 g

Molar mass of Cl₂ = 2 × 35. 5 = 71 g/mol

Mass of Cl₂ from the balanced equation = 1 × 71 = 71 g

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol

Mass of NaCl from the balanced equation = 2 × 58.5 = 117 g

Summary:

From the balanced equation above,

46 g of Na reacted with 71 g of Cl₂ to produce 117 g of NaCl.

Next, we shall determine the limiting reactant.

This can be obtained as follow:

From the balanced equation above,

46 g of Na reacted with 71 g of Cl₂.

Therefore, 2.6 g of Na will react with = (2.6 × 71)/46 = 4.01 g of Cl₂.

From the calculations made above, we can see that only 4.01 g of Cl₂ at of 5 g given in question reacted completely with 2.6 g of Na. Therefore, Na is the limiting reactant and Cl₂ is the excess reactant.

Next, we shall determine the theoretical yield of NaCl. The limiting reactant will be used to obtain the theoretical yield since all of it is consumed in the reaction.

The limiting reactant is Na and the theoretical yield of NaCl can be obtained as follow:

From the balanced equation above,

46 g of Na reacted to produce 117 g of NaCl.

Therefore, 2.6 g of Na will react to produce = (2.6 × 117)/46 = 6.61 g of NaCl.

Thus the theoretical yield of NaCl is 6.61 g

Finally, we shall determine the percentage yield of NaCl. This can be obtained as follow:

Actual yield of NaCl = 5.8 g

Theoretical yield of NaCl = 6.61 g

Percentage yield =?

Percentage yield = Actual yield /Theoretical yield × 100

Percentage yield = 5.8/6.61 ×100

Percentage yield of NaCl = 87.75%

Answer:

10. Which best describes the purpose of food? to kill bacteria

. to prevent disease

Answer:

The organisms that eat the producers are the primary consumers. They tend to be small in size and there are many of them. ... Because of this inefficiency, there is only enough food for a few top level consumers, but there is lots of food for herbivores lower down on the food chain.

Explanation:

Answer:

A.  0.7 g

Explanation:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

antacid + water  →  liquid + gas

 3.0 g  + 35.0 g   = 37.3 g + x

38.0 g = 37.3 + x

x = 38.0 g - 37.3 g

x = 0.7 g

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.