All categories

3 years ago

28. The formula for magnesium nitride is____. a. MgN b. MgN3 c. Mg3N2 d. Mg2N3

Chemistry

2 answers:

oksian1 [2.3K]3 years ago

8 0

Answer:

Explanation:

As long as those numbers are subscripts then that's right

Greeley [361]3 years ago

7 0

Answer:
C. Mg3N2

Explanation:

Magnesium has a positive 2 charge and nitrogen has a negative 3 charge. To completely balance it out, you need three magnesium’s and two nitrogen’s. The final charge for magnesium would be positive 6 and the final charge for nitrogen would be negative 6, this will make it neutral.

You might be interested in

Is C2S6 ionic or covalent

Stels [109]

Answer:

covalent

Explanation:

C2S6 is a compound made of 2 nonmetals which makes it covalent

Hope this helps! Plz mark brainliest

8 0

3 years ago

Notice what happens to the numbers of protons, neutrons, and electrons when you

babymother [125]

Answer:

Only the number of neutrons change.

3 0

3 years ago

How many molecules are in 3.6 grams of NaCl?

raketka [301]

Answer:

$\boxed{\text{None}}$

Explanation:

There are no molecules in NaCl, because it consists only of ions.

However, we can calculate the number of formula units (FU) of NaCl.

Step 1. Calculate the moles of NaCl

$\text{No. of moles}=\text{3.6 g NaCl}\times \dfrac{\text{1 mol NaCl}}{\text{63.54 g NaCl}} = \text{0.0567 mol NaCl}$

Step 2. Convert moles to formula units

$\text{FU} = \text{0.0567 mol NaCl} \times \dfrac{6.022 \times 10^{23}\text{ FU NaCl}}{\text{1 mol NaCl}}\\\\= 3.4 \times 10^{22} \text{ FU NaCl}$

There are $\boxed{3.4 \times 10^{22} \text{ FU NaCl}}$ in 3.6 g of NaCl.

6 0

3 years ago

How many moles of Al2O3 can be formed from 10.0 g of Al?

Nutka1998 [239]

Answer:

n Al= 10/27( mol)- >n Al2O 3 =5/27(mol)

Explanation:

3 0

3 years ago

What do kinetic and potential energy have in common

adell [148]

Just simply... they both are energy.
Use a bow and arrow as an example:
When you pull back an arrow, potential energy or PE is stored in the string and the limbs of the bow.
When you release the the arrow, energy is being transferred from the bow to the arrow. The arrow now has kinetic energy or KE, this means that the energy is being used by the arrow.

7 0

3 years ago