1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tomtit [17]
3 years ago
12

2. (05.02 MC)

Chemistry
1 answer:
iVinArrow [24]3 years ago
5 0

Solution :

We know, molecular mass of NH₃ is , M = 17 g/mol .

Number of moles of NH₃ in 7.2 × 10²⁴ are :

n = \dfrac{7.2 \times 10^{24}}{6.022 \times 10^{23}}\\\\n = 11.96\ moles

So, mass of NH₃ present in 11.96 moles is :

m = 11.96 × 17 gram

m = 203.32 gram

Hence, this is the required solution.

You might be interested in
28. The IUPAC name for OH is
Jet001 [13]

Answer:

A

Explanation:

5 0
2 years ago
A piece of stainless steel weighing 1.55 g absorbs 141 J of heat energy when its temperature increases by 178oC. What is the spe
V125BC [204]

Answer:

= 0.551J/(g°C)

Explanation:

Specific heat is the amount of heat to required to raise the temperature of 1 gram substance to 1° C

The formula

C = q / m × ΔT ______ (1)

where ,

C = specific heat

q = heat

m = mass

ΔT = change in temperature

mass of the stainless steel is m = 1.55g

heat of the stainless steel is q = 141 J

the change in temperature is ΔT = 178°C

substitute all the value in the equation (1)

C = \frac{141}{1.55 \times 178 } \\\\= 0.511J /(g^\circ C)

7 0
3 years ago
Read 2 more answers
Can you answer all of the questions plz
NARA [144]
No..............................
3 0
3 years ago
Read 2 more answers
What of the following is made out of atoms? (HINT: vocabulary word "atom" or "matter") * 1 Air
MissTica
The correct answer would be air
8 0
3 years ago
Find the relative molecular mass of hydrated iron (II) sulphate FeSO4.7H2O
Pepsi [2]

Answer:

the relative molecular mass of hydrated iron (II) sulfate FeSO4.7H2O is 278.02

Explanation:

5 0
2 years ago
Other questions:
  • BRAINLIESTTT ASAP!! PLEASE HELP ME :))
    9·1 answer
  • When the pressure that a gas exerts on a sealed container changes from 22.5 psi to psi the temperature changes from 110 c to 65.
    14·1 answer
  • The longest wavelength of light with enough energy to break the Cl-Cl bond in Cl2(g) is 495 nm.
    15·1 answer
  • Which of the following is not a savanna?<br> a. Cerrado<br> b. Pampas<br> C. Llanos<br> d. Serengeti
    11·2 answers
  • What do chemical formulas of acids have in common?
    12·1 answer
  • Water temperature
    9·1 answer
  • ☆Only need information for problem 3 but you need to know the information from problem 2 to get answer 3☆
    11·1 answer
  • Can someone help me...........................
    8·2 answers
  • During a phase change, such as when an ice cube melts, its temperature —
    14·1 answer
  • Excessive use of fertilizers make soil unfertile. true or false​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!