If an atom has 30 electrons and 35 neutrons, what is its approximate atomic mass? what is the name of this element?

1 answer:

6 0

30 electrons = atomic number
Look at your periodic table. You will see zinc has a atomic number (the top number) of 30.

When you add 30 and 35 you get 65. The is the atoms ATOMIC MASS. So looking at zinc on the periodic table, look at its bottom number, which is its atomic mass. It will be 65.

This means the name of the element is ZINC.

Hope this helped!

You might be interested in

I'm hot right? here's a pic of me

viva [34]

DANNNNNNNNNNNNGGGGGG hella hot, the hottest I seen in this world !!

4 0

2 years ago

Read 2 more answers

Which of the following is an example of a negative tropism?

salantis [7]

C—stems and leaves growing upward?

7 0

3 years ago

How many liters of nitrogen would be needed to react with 93.0 liters of hydrogen using the balance

zysi [14]

Answer:

7NH

Explanation:

3 0

3 years ago

Is germahium a metal?

MA_775_DIABLO [31]

Germanium is classified as a metalloid or semi-metal . (:

4 0

3 years ago

A compound is 54.53% c, 9.15% h, and 36.32% o by mass. what is its empirical formula? the molecular mass of the compound is 132

Yakvenalex [24]

<span>First - you need the empirical formula.

So, assume you have 100 g of the compound.

If so, you'll have 54.53 gram of C, 9.15 g of H and 36.32 g of O. Find the number of moles of each.

54.53 g C (1 mole C / 12.01 g C) = 4.540

9.15 g H (1 mole H / 1.008 g H) = 9.077

36.32 g O (1 mole O / 15.9994 g O) = 2.270

Take the smallest number found and divide the others by it to get the empirical formula.

4.540/2.270 = 2.
9.077/2.270 = 4.
2.270/2.270 =1.

So, that gives you the empirical formula of C2H4O.

Find the weight of this compound. C = 12, H = 1, O = 16. So, C2H4O is 44 amu.

132/44 = 3.

So, 3 (C2 H4 O) = C6H12O3 = molecular formula.</span>

6 0

3 years ago