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Fed [463]
3 years ago
12

Calculate the number of grams in magnesium present in 25 g of magnesium phosphate

Chemistry
2 answers:
Ilya [14]3 years ago
6 0
25 g of Mg3(PO4)2 is about 0.096 mol so each mol of that is equal to 3 mols of Mg
which leads to about 6.9 g of Mg
Mg : 24 g/mol
P : 30 g/mol
O : 16 g/mol
olga55 [171]3 years ago
4 0

you can google it and it pops up right away

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Arsenic produces a blue flame when heated. Calcium produces an orange-red flame. Which of these best explains why this differenc
MrMuchimi

Flame colors are produced from the movement of the electrons in the metal ions present in the compounds. When you heat it, the electrons gain energy and can jump into any of the empty orbitals at higher levels Each of these jumps involves a specific amount of energy being released as light energy, and each corresponds to a particular color. As a result of all these jumps, a spectrum of colored lines will be produced. The color you see will be a combination of all these individual colors.

6 0
3 years ago
If an atom has 3 protons, what is its atomic number?
Andru [333]

Answer:

Atomic Number = 3.

Explanation:

The number of protons determines the atomic number. Basically the number of protons is the exact same as the atomic number.

Protons 3 = Atomic number 3

5 0
2 years ago
Balance the following equation and find molar ratios from the equation,
Vikki [24]
To balance it, it would be N2 + 3H2 ------> 2NH3. 

for c) it would be 2N2 + 6H2 -------> 4NH3
7 0
2 years ago
What type of chemical bond involves the sharing of a pair of electrons by two atoms in a molecule.
Over [174]

Answer:

Covalent bond.

Explanation:

There are two kinds of chemical bonds: covalent bonds and ionic bonds.

  • A covalent bond is formed when two atoms share a pair of electrons (two electrons for each bond.)
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In this example, since the atoms are sharing atoms, the chemical bond between them would be a covalent bond.

4 0
2 years ago
Q #13 How many moles of MgCl2 are there in 350. g of compound?
Vaselesa [24]

<u>Answer:</u>

3.67 moles

<u>Step-by-step explanation:</u>

We need to find out the number of MgCl_2 moles present in 350 grams of a compound.

Molar mass of Mg = 24.305

Molar mass of Cl_2 = 35.453

So, one mole of MgCl_2 = 24.305 + (35.453 * 2) = 95.211g

1 Mole in 1 molecule of MgCl_2 = \frac{1}{95.211} = 0.0105

Therefore, number of moles in 350 grams of compound = 0.0105 * 350

= 3.67 moles



8 0
3 years ago
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