4 years ago

Which of the following is an example of a formula of a compound?

Chemistry

2 answers:

diamong [38]4 years ago

5 0

Answer:

A) NH3

It is the only one that is a formula!!

pickupchik [31]4 years ago

3 0

Answer: A
Ammonia is a compound of nitrogen and 3 molecules of hydrogen while NH3 is a formula

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What is the expected freezing point of a 0.50 m solution of na2so4 in water kf for water is 1.86°c/m?

Anna007 [38]

Colligative properties calculations are used for this type of problem. Calculations are as follows:<span>

ΔT(freezing point) = (Kf)m
ΔT(freezing point) = 1.86 °C kg / mol (0.50 mol/kg)
ΔT(freezing point) = 0.93 °C
Tf - T = 0.93 °C
<span>T = -0.93 °C</span></span>