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ASHA 777 [7]
4 years ago
5

If a 250mL beaker weighs 13.473g and the same beaker plus 2.2 mL of water weighs 15.346g. How much does the 2.2 mL of water, alo

ne, weigh? Show your work for the calculation. Be sure to use significant figures.
Chemistry
1 answer:
Sindrei [870]4 years ago
4 0

Given :

A 250 ml beaker weighs 13.473 g .

The same beaker plus 2.2 ml of water weighs 15.346 g.

To Find :

How much does the 2.2 ml of water, alone, weigh .

Solution :

Now, mass of water is given by :

\text{Mass of water alone = Total mass - Mass of beaker alone}\\\\Mass =15.346-13.473\ g\\\\Mass =1.873\ g

Therefore , mass of 2.2 ml of water alone is 1.873 g .

Hence , this is the required solution .

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konstantin123 [22]

Answer:

- From octane: m_{CO_2}=1.54x10^5gCO_2

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Explanation:

Hello,

At first, for the combustion of octane, the following chemical reaction is carried out:

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Now, for ethanol:

C_2H_6O+3O_2\rightarrow 2CO_2+3H_2O

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Best regards.

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4 years ago
**Narrowed it down please help!**
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Answers:

1. B.)

2. Both A.) and B.)

3. A.)

Step-by-step explanation:

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Because the particles are ions and electrons, rather than neutral atoms or molecules as in ordinary gases, scientists consider a plasma to be a fourth state of matter<em>.</em>

2. Kinetic Molecular Theory

Both activities illustrate the postulate.

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3. Hot air balloon

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As the hot air escapes from the vent, the combined mass of balloon + hot air becomes less than the mass of cold air that it displaces, and the balloon rises.

B.) is <em>wrong</em>. Boyle's law applies only when both the number of moles and  the temperature remain constant.

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If hydrogen is the lightest element, why don't we use it to inflate balloons
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Answer:

Aye Wassup? Adam Here :D

Explanation:

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Hope This Helped Bro: "AdamDaAssasin"

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