Atomic number indicates which of the following

1 answer:

8 0

The atomic number of an element gives the element it's identity. This is also known as the number of protons within an element. If you have the number of protons but don't know the element's atomic mass, add the protons and neutrons to get the mass number.
I hope this helped!

You might be interested in

What is the charge on the balloon after rubbing?

Ede4ka [16]

Answer:

When you rub a balloon on your head, electrons move from the atoms and molecules in your hair onto the balloon.

Explanation:

Electrons have a negative charge, so the balloon becomes negatively charged, and your hair is left with a positive charge.

7 0

3 years ago

Which of the following correctly represents the radioactive decay of cesium-137?<br><br>

pishuonlain [190]

What are the answers ??

5 0

3 years ago

Calculate the mass in amu of 75 atoms of aluminum

lyudmila [28]

<span>Calculating mass using Atomic Mass Units (amu):. Ex. Calculate the mass, in amu, of a sample of aluminum that contains 75 atoms. 1 Al atom = 26.98 amu.</span>

4 0

3 years ago

Calculate the molarity of a potassium hydroxide solution if 25.0 mL of this solution was completely neutralized by 23.3 mL of 0.

Mice21 [21]

4.564 their go the answer

5 0

3 years ago

How many grams of 48.0 wt% NaOH (FM 40.00) should be diluted to 1.00 L to make 0.11 M NaOH? (Enter your answer using two digits.

kifflom [539]

Answer:

The answer is 916.67 g

Explanation:

48.0 wt% NaOH means that there are 48 g of NaOH in 100 g of solution. With this information and the molecular weight of NaOH (40 g/mol), we can calculate the number of mol there are in 100 g of this solution:

$\frac{48 g NaOH}{100 g solution}$ x $\frac{1 mol NaOH}{40 g}$ = 0.012 mol NaOH/100 g solution

Finally, we need 0.11 mol in 1 liter of solution to obtain a 0.11 M NaOH solution.

0.012 mol NaOH ------------ 100 g solution

0.11 mol NaOH------------------------- X

X= 0.11 mol NaOH x 100 g/ 0.012 mol NaOH= 916.67 g

We have to weigh 916.67 g of 48.0%wt NaOH and dilute it in a final volume of 1 L of water to obtain a 0.11 M NaOH solution.

7 0

3 years ago