if the force between two charged particles increases,but the distance between them does not change, then:

Chemistry

1 answer:

labwork [276]3 years ago

3 0

Answer:

the earth

Explanation:

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10. A 2.36-gram sample of NaHCO3 was completely decomposed in an

Airida [17]

Answer:

0.79 g

Explanation:

Let's introduce a strategy needed to solve any similar problem like this:

Apply the mass conservation law (assuming that this reaction goes 100 % to completion): the total mass of the reactants should be equal to the total mass of the products.

Based on the mass conservation law, we need to identify the reactants first. Our only reactant is sodium bicarbonate, so the total mass of the reactants is:

$m_r=m_{NaHCO_3}=2.36 g$

We have two products formed, sodium carbonate and carbonic acid. This implies that the total mass of the products is:

$m_p=m_{Na_2CO_3}+m_{H_2CO_3}$

Apply the law of mass conservation:

$m_r=m_p$

Substitute the given variables:

$m_{NaHCO_3}=m_{Na_2CO_3}+m_{H_2CO_3}$

Rearrange for the mass of carbonic acid:

$m_{H_2CO_3}=m_{NaHCO_3}-m_{Na_2CO_3}=2.36 g - 1.57 g=0.79 g$

8 0

3 years ago

What is the formula of a compound formed between nitrogen (N) and potassium (K)?

Rina8888 [55]

You need to consider the valences of the two elements. Potassium is +1; nitrogen is -3. To balance the molecule, you need 3 potassium to one nitrogen, or K3N

5 0

3 years ago

Read 2 more answers

What effect would you expect this to have on CO2 levels in the atmosphere?

VLD [36.1K]

expect what to have?!?!?!?

5 0

2 years ago

Which balance is a centigram balance? A Or B

MaRussiya [10]

I think it is B because you didn’t type the options

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