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3 years ago

1: The atomic number of an atom is equivalent to which of the following?

1 answer:

7 0

I think the correct answer among the choices presented above is option C. The atomic number of an atom is equivalent to the number of protons in the nucleus. For a neutral atom, it is also the number of electrons since in a neutral atom protons and electrons are present in equal number.

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What is the final volume of a gas (in liters) when the initial volume is 14.00 L at

8_murik_8 [283]

Answer:

$V_2=1344L$

Explanation:

Hello there!

In this case, since we have a problem about volume-pressure relationship, the idea here is to use the Boyle's law to calculate the final volume as shown below:

$P_2V_2=P_1V_1\\\\V_2=\frac{P_2V_2}{P_1}\\$

Then, we plug in the initial and final pressures and the initial volume to obtain:

$V_2=\frac{14.00L*0.9600atm}{0.01000atm}\\\\V_2=1344L$

Regards!

4 0

3 years ago

A piece of work can be finished in 30 days 8 hours a day. In how many Days the work would have been finished working 6 hours a d

goblinko [34]

Answer:

If 8 hours= 30 days

then 6 hours= 8×30÷6

= 40 days

Explanation:

7 0

3 years ago

Is F2O a oxigone flouride or flourin oxide?

netineya [11]

I think it's a Oxygen Difluoride

3 0

3 years ago

Read 2 more answers

A ballon is filled with 35 L of air at 2.0 atm. If the pressure is increase to 3.5 atm, what is the new volume?

Strike441 [17]

Answer:

20 L

Step-by-step explanation:

Since temperature is constant, we can use Boyle’s Law.

p₁V₁ = p₂V₂ Divide each side by p₂

V₂ = V₁ × p₁/p₂

=====

Data:

p₁ = 2.0 atm; V₁ = 35 L

p₂ = 3.5 atm; V₂ = ?

=====

Calculations:

V₂ = 35 × 2.0/3.5

V₂ = 20 L

4 0

3 years ago

Does a reaction occur when aqueous solutions of chromium(III) sulfate and calcium nitrate are combined

kotykmax [81]

Answer: $Cr_2(SO_4)_3(aq)+3Ca(NO_3)_2(aq)\rightarrow 2Cr(NO_3)_3(aq)+3CaSO_4(aq)$

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The balanced chemical equation when when aqueous solutions of chromium(III) sulfate and calcium nitrate are combined is:

$Cr_2(SO_4)_3(aq)+3Ca(NO_3)_2(aq)\rightarrow 2Cr(NO_3)_3(aq)+3CaSO_4(aq)$

8 0

3 years ago