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3 years ago

A balance is used to measure: mass weight volume density

Chemistry

2 answers:

Crank3 years ago

8 0

A balance is used to determine mass

grin007 [14]3 years ago

6 0

Once the unit of mass is defined, samples of matter can be compared to the unit and thus measured.

Comparing a sample of matter to the standard unit of mass, or to its subdivision the gram, can be done

on an equal-arm balance.

You might be interested in

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?

frozen [14]

Hey there!

The number of molecules is the same.

One mole of a type of molecule is <u><em>always</em></u> 6.022 x 10²³ molecules, so no matter what the type of molecule is there will be the same amount of molecules.

The mass, volume, or other properties can be different, but the number of molecules will be the same.

Hope this helps!

7 0

4 years ago

Which of the following describes an exothermic reaction?

sattari [20]

Answer:

The answer to your question is: second option.

Explanation:

An exothermic reaction is a reaction that releases energy to the environment.

Thermal energy is absorbed by the system. This sentence is describing an endothermic reaction.

Thermal energy is absorbed by the surroundings. This sentence is describing an exothermic reaction.

Thermal energy is not transferred. This sentence is describing an isolated system.

The initial and final temperatures of the system remains the same. This option is incorrect is not describing an exothermic reaction.

7 0

4 years ago

What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?

tresset_1 [31]

This would represent a synthesis reaction

7 0

3 years ago

Read 2 more answers

According to the following balanced reaction, how many moles of NO are formed from 12.66 moles of NO2 if there is plenty of wate

sp2606 [1]

Answer:

$\boxed{\text{4.220 mol}}$

Explanation:

3NO₂ + H₂O → 2HNO₃ + NO

n/mol: 12.66

You get 1 mol of NO from 3 mol of NO₂

$\text{Moles of NO} = \text{12.66 mol NO}_{2}\times \dfrac{\text{1 mol NO}}{\text{3 mol NO}_{2}} = \textbf{4.220 mol NO}\\\\\text{The reaction forms } \boxed{\textbf{4.220 mol}} \text{ of NO}$

5 0

3 years ago

Read 2 more answers

The diagrams represent the same number of particles of a gas in 2 containers D snd E, Which have different volume. the two conta

MrRissso [65]

In container E, the pressure will be higher than container D

<h3>Further explanation</h3>

Given

Container with :

the same particles
the same temperature
the different volume

Required

The higher pressure container

<h3>Solution</h3>

Boyle's Law stated that :

At a constant temperature, the gas volume is inversely proportional to the pressure applied

$\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}$

From the diagram (picture), it shows that the volume of container D is greater than container E, <em>so the pressure applied to container D </em><em>will be less than</em><em> the pressure applied to container E</em>

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8 0

3 years ago