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Rama09 [41]
3 years ago
10

Which of the following elements can have an expanded octet when they form covalent compounds with other elements?

Chemistry
2 answers:
Akimi4 [234]3 years ago
7 0
(B) sulfur and phosphorus!!!
Neporo4naja [7]3 years ago
5 0

Answer:

B.

Explanation:

Some of the  elements of the third-period and periods below can have expanded octet because they have d- sub-level.

We have 2 possible answers. A and B. Because  lodine and chlorine. Sulfur and phosphorous are  in the 3d or lower periods.

In the compound P2S5, where P forms 5 bonds.

Iodine and chlorine do not have enough difference in electronegativity to form compound ICl7.

So, the answer is B.

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a compound has an empirical formula of CH2 what is the molecular formula if it's molar mass is 252.5 grams/mol
Goryan [66]

Empirical formula is the simplest ratio of components making up the compound. the molecular formula is the actual ratio of components making up the compound.

the empirical formula is CH₂. We can find the mass of CH₂ one empirical unit and have to then find the number of empirical units in the molecular formula.

Mass of one empirical unit - CH₂ - 12 g/mol x 1 + 1 g/mol x 2 = 12 = 14 g

Molar mass of the compound is - 252 .5 g/mol

number of empirical units = molar mass / mass of empirical unit

                                           = \frac{252.5 g/mol}{14 g}

                                           = 18 units

Therefore molecular formula is - 18 times the empirical formula

molecular formula  - CH₂ x 18 = C₁₈H₃₆                                            

molecular formula is C₁₈H₃₆  

8 0
3 years ago
If the atomic weight of nitrogen is 14.01, what is the mass of the nitrogen atoms in one mole of cadmium nitrate, Cd(NOÀ)
Nadya [2.5K]
The answer is 28.02.

The chemical formula for cadmium nitrate is Cd(NO₃)₂.

There are in total 2 nitrogen atoms in Cd(NO₃)₂. If <span>the atomic weight of nitrogen is 14.01</span>, the mass <span>of two nitrogen atoms in one mole of cadmium nitrate is 28.02:
2 </span>· 14.01 = 28.02
8 0
3 years ago
if 11.74 liters of gas at STP are pumped into a basketball, how many moles of gas are in the basketball? assume the basketball w
ser-zykov [4K]

Answer:

0.52 mol

Explanation:

Using the general gas equation formula:

PV = nRT

Where;

P = pressure (atm)

V = volume (Liters)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

At STP (standard temperature and pressure), temperature of a gas is 273K, while its pressure is 1 atm

Using PV = nRT

n = PV/RT

n = (1 × 11.74) ÷ (0.0821 × 273)

n = 11.74 ÷ 22.41

n = 0.52 mol

There are 0.52 moles in the basketball

6 0
3 years ago
Please write the process (how soap is made?.......................​
Mamont248 [21]
Soap is created by mixing fats and oils with a base as opposed to detergent which is created by combining chemical compounds in a mixer.

4 0
3 years ago
Read 2 more answers
If the H+ ion concentrati on in an aqueous solution is 0.0010 M, why is it not possible for the OH− ion concentration to be 1.0
spayn [35]

Answer:

im not sure sry

Explanation:

6 0
3 years ago
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