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3 years ago

In a nuclear reaction, which of the following must be conserved?

Chemistry

1 answer:

dolphi86 [110]3 years ago

8 0

Answer:

A. Energy must be conserved in a nuclear reaction

Explanation:

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NO LINKS07.02 LC)

tresset_1 [31]

I believe they are converted to energy

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3 years ago

A physical property of matter that does not depend on the amount of matter present is called a(n) ___ property.

padilas [110]

Answer:

chemical

Explanation:

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3 years ago

Read 2 more answers

Convert mass to moles for both reactants.<br> 2.50g CuCl2<br> 0.50g Al

alexandr402 [8]

Answer:

Number of moles of Al = 0.02 mol

Number of moles of CuCl₂ = 0.02 mol

Explanation:

Given data:

Mass of CuCl₂ = 2.50 g

Moles of CuCl₂ = ?

Solution:

Formula:

Number of moles = mass / molar mass

Molar mass of CuCl₂ = 63.546 + 35.5 ×2

Molar mass of CuCl₂ = 134.546 g/mol

Now we will put the values in formula:

Number of moles = 2.50 g / 134.546 g/mol

Number of moles = 0.02 mol

Given data:

Mass of Al = 0.50 g

Moles of Al = ?

Solution:

Formula:

Number of moles = mass / molar mass

Molar mass of Al = 27 g/mol

Now we will put the values in formula:

Number of moles = 0.50 g / 27 g/mol

Number of moles = 0.02 mol

6 0

4 years ago

Which has a higher melting point, NaBr or KBr

Blababa [14]

NaBr melting point : 1,377°F (774C)
KBr: 1,353°F (734C)

7 0

3 years ago

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Which equation obeys the law of conservation of mass? A. 2C4H10 + 2Cl2 + 12O2 7CO2 + CCl4 + 10H2O B. C4H10+ Cl2 + 2O2 7CO2 + CCl

Reptile [31]

Answer : The correct option is A.

Explanation :

Law of conservation of mass : In the chemical reaction, the mass of reactant must be equal to the mass of product.

A. $2C_4H_{10}+2Cl_2+12O_2\rightarrow 7CO_2+CCl_4+10H_2O$

The mass of reactant side = $2C_4H_{10}+2Cl_2+12O_2=[8(12)+20(1)]+4(35.5)+24(16)=642g$

The mass of product side = $7CO_2+CCl_4+10H_2O=7(12)+14(16)+12+4(35.5)+20(1)+10(16)=642g$

This means, the mass of product is equal to the mass of reactant. The mass remains conserved and obeys the law of conservation of mass.

The reaction B, C, D, E does not obey the law of conservation of mass.

Therefore, Only reaction A obey the law of conservation of mass.

7 0

4 years ago