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3 years ago

Which term describes this diagram?A) ElementB) CompoundC) Mixture

Chemistry

2 answers:

Elina [12.6K]3 years ago

7 0

The answer is B- compound

Olegator [25]3 years ago

6 0

Answer:

Explanation:

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At a constant temperature a container of helium gas with an unknown volume changes pressure from 1 atm to 2 atm. If at 2 atm the

ycow [4]

Answer:

7.5 L

Explanation:

Use Boyle's Law and rearrange formula.

- Hope this helps! Please let me know if you need further explanation.

5 0

3 years ago

A chemist must prepare 550 mL of hydrochloric acid solution with a pH of 1.60 at 25°C .

hammer [34]

Answer: The volume of concentrated hydrochloric acid solution is 1.73 mL

Explanation:

To calculate the hydrogen ion concentration of the solution, we use the equation:

$pH=-\log[H^+]$

We are given:

pH = 1.60

Putting values in above equation, we get:

$1.60=-\log [H^+]$

$[H^+]=10^{-1.60}=0.0251M$

To calculate the volume of the concentrated solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated HCl solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted HCl solution

We are given:

$M_1=8.0M\\V_1=?mL\\M_2=0.0251M\\V_2=550mL$

Putting values in above equation, we get:

$8.0\times V_1=0.0251\times 550.0\\\\V_1=\frac{0.0251\times 550}{8.0}=1.73mL$

Hence, the volume of concentrated hydrochloric acid solution is 1.73 mL

6 0

3 years ago

How many significant figures are in 235.5

Lana71 [14]

There are 4 signifigant figures in 235.5.

8 0

4 years ago

Sodium + Silverchloride —> makes what?

NISA [10]

Answer:

The answer is sodium chloride

Explanation:

since Na is more reactive than Ag it displaces the Ag from AgCl

check the reactivity series to prove the point

8 0

3 years ago

Read 2 more answers

Why does decreasing the volume of gas cause the pressure to increase if temperature is constant

Yuri [45]

There's less space, causing the air particles to collide with the walls of the container more frequently. Pressure is that energy caused by molecules striking a surface. Thus, compacting air molecules leads to higher pressure.

5 0

3 years ago

Which term describes this diagram?A) ElementB) CompoundC) Mixture​

Which term describes this diagram?A) ElementB) CompoundC) Mixture