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4 years ago

HELP NOW BRAINLIST AND 15 POINTS!!!!! I'M TIMIED!!!!!

Chemistry

1 answer:

goblinko [34]4 years ago

6 0

Answer:

Explanation:

1 = The given chemical reaction does not follow the law of conservation of mass because,

2 = Four hydrogen atoms are present in reactant side and two hydrogen atoms are present in product side.

3 = 1 ) The given chemical reaction does not follow the law of conservation of mass because,

CH₄ + O₂ → CO₂ + H₂O

16 g + 32 g 44 g + 18 g

48 g 62 g

Law of conservation of mass:

This law stated that mass can not be created or destroyed in chemical reaction. It just changed from one to another form.

For example:

C₂H₄ + 3O₂ → 2CO₂ + 2H₂O

28 g + 96 g = 88 g + 36 g

124 g = 124 g

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How many particles are in chemicals

stepan [7]

Answer:

6.022 x 10^23 particles

Explanation:

Chemists have chosen to count atoms and molecules using a unit called the mole (mol), from the Latin moles, meaning “pile” or “heap.”

One mole is 6.022 x 10^23 of the microscopic particles which make up the substance in question.

Hope this helped! :^)

4 0

2 years ago

EASY QUICK CHEM QUESTION!! Which line indicates a higher reaction rate?

ad-work [718]

2. B because it has a lower activation energy.

idk because you have no picture with the lines on it

3 0

3 years ago

Read 2 more answers

How much thermal energy is required to heat 15.2g of a metal (specific heat= 0.397 J/g C) from 21C to40.3C?

Pepsi [2]

Q=mcΔT
Q=15.2g(0.397J/g C)(40.3-21)
Q=116.5J

5 0

3 years ago

Write a complete, balanced equation for the following reactions:

lys-0071 [83]

Answer:

Solution given:

c) Magnesium metal plus silver acetate (teachers note:

Balanced chemical equation:

$\boxed{\bold{\green{Mg+AgC_{2}H_{3}O_{2}\rightarrow MgC_{3}H_{3}O_{2}+Ag^{+}}}}$

d) hydrobromic acid plus zinc metal (teachers note:

Balanced chemical equation:

$\boxed{\bold{\green{2HBr+Zn \rightarrow Be_{2}+H_{2}}}}$

6 0

3 years ago

What the total number of neutrons in a atom of 0-18?

Allushta [10]

The answer is: 10
I could be wrong

5 0

3 years ago