Please help1. What is the correct formula for magnesium cyanide?
A.MgCy
B.MnCN
C.Mg(CN)2
D.MgCN

2. What is the correct formula for dinitrogen pentoxide?
A.2NO5
B.N2O5
C.DnPo
D.NO2.5

3. What is the correct formula for titanium (III) perchlorate?
A.TiPc
B.Ti3(ClO)4
C.Ti3ClO4
D.Ti(ClO4)3

4. What is the correct formula for nickel (III) nitrate?
A.Ni(NO3)3
B.Ni3NO3
C.Ni3N
D.NiN3

5. What is the correct name for Co(C2H3O2)3
A.carbon oxide hydride
B.cobalt acetate
C.cobalt triacetate
D.cobalt (III) acetate

6. What is the correct name for NiSO4?
A.nickel (I) sulfide
B.nickel (II) sulfate
C.nickel sulfide tetraoxide
D.nickel sulfate

7. What is the correct name for N2F4?
A.dinitrogen fluoride (IIII)
B.nitrogen (II) fluoride
C.dinitrogen tetrafluoride
D.nitrofluorine

8. What is the correct name for PCl5?
A.phosphorus pentachloride
B.phosphorus (V) chloride
C.chlorophosphorus (V)
D.monophosphorus heptachloride

9. Which type of bond (ionic, covalent or metallic) would Sr and Sc make?
A.ionic
B.covalent
C.metallic
D.none of the above

10. Which type of bond (ionic, covalent or metallic) would Ba and Br make?
A.ionic
B.covalent
C.metallic
D.none of the above

11. Which type of bond (ionic, covalent or metallic) would copper and tin make?
A.ionic
B.covalent
C.metallic
D.none of the above

12. Which type of bond (ionic, covalent or metallic) would N and Br make?
A.ionic
B.covalent
C.metallic
D.none of the above

Answers

Answer 1
Answer: 1. C : Mg(CN)2
2. B : N2O5
3. D : Ti(ClO4)3
4. A : Ni(NO3)3
5. D : Cobalt (III) Acetate
6. B : Nickel(II) sulfate
7. C : Dinitrogen Tetrafluoride
8. A : Phosphorus pentachloride
9. C : Metallic (<!> This is the only one I'm not 100% sure of)
10. A : Ionic
11. C : Metallic
12. B : Covalent
Answer 2
Answer: #1 : C. Mg(CN)2

#2: B. N205

#3: D. Ti(CIO4)3

#4: A. But you maked a little mistake. It's Ni(NO3)2

#5: D. Cobalt (III) Acetate.

#6: B.

#7: C.

# 8: A.

# 9: C.

# 10: A.

# 11: C.

# 12: B.

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How many moles of mgci2 are there in 332 g of the compound

Answers

find molar mass of MgCl2 so M=95.211 g/mol
N=m/M 
N=332/95.2
N=3.487
dont forget to round your sig figs 

In chemical equations, as long as all of the coefficients are the same on both sides of the equation, the equation is balanced.True
False

Answers

False. The subscripts have to be read and you must see if both sides have the same number of atoms.
This statement is false. Not only the coefficients must be balanced, the subscripts and also the number of elements must be equation on BOTH sides of the equation. That means that the reactants and products are equal, and unchanging. 

How many valence electrons does a neutral atom of aluminum have?

Answers

The number of valence electrons that a neutral atom of aluminum has is 3 valence electrons.

What are valence electrons?

Valence electrons are those electrons in the outermost parts of elements that can be combined or loned to other elements during chemical reactions. Aluminum has three electrons in the valence shell.

The total number of electrons that aluminum has is 13 and the 3P1 shell has three electrons. So, this is the number of valence electrons.

Learn more about valence electrons here:

brainly.com/question/371590

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Answer:

Aluminum has 13 electrons in a neutral atom. The 1S2, 2S2 and 2P6 shells are full, and so is the 3S2. The 3P1 shell has one electron in it (in Al's neutral atom) and that gives aluminum one lone valence electron and two "semi-valence" electrons which can be loaned out.

Explanation:

The pressure of 1 mol of gas is decreased to 0.5 atm at 273 K. What happens to the molar volume of the gas under these conditions?

Answers

Answer : The molar volume of the gas will be, 44.82 L

Solution :

Using ideal gas equation,

PV=nRT

where,

n = number of moles of gas  = 1 mole

P = pressure of the gas = 0.5 atm

T = temperature of the gas = 273 K

R = gas constant = 0.0821 Latm/moleK

V = volume of the gas.

Now put all the given values in the above equation, we get the molar volume of the gas.

(0.5atm)* V=(1mole)* (0.0821Latm/moleK)* (273K)

V=44.82L

Therefore, the molar volume of the gas will be, 44.82 L

How much heat is absorbed during the reaction of 48.0 grams of O2 with excess nitrogen in the following reaction if ΔH = 68 kJ/mol N2?"

Answers

Chemistry is hard………

Use the periodic table to identify the element represented by each of the following electron configurations. [He]2s2: ?

Answers

Answer:

Be. Beryllium

Explanation: