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
Arisa [49]
3 years ago
14

Which substance has a molar mass of 33.99 g/mol?

Chemistry
1 answer:
alex41 [277]3 years ago
6 0

Answer:

PH₃.

Explanation:

Hello.

In this case, among the options:

PH₃, GaF₃, SF₂ and CO₂

We compute their molar masses by adding the atomic masses of the constituting elements by their subscripts:

M_{PH_3}=m_P+3*m_H=30.97+3*1.01=34.00g/mol\\\\M_{GaF_3}=m_{Ga}+3*m_F=69.72+3*19.00=126.72g/mol\\\\M_{SF_2}=m_{S}+2*m_F=32.07+2*19.00=70.07g/mol\\\\M_{CO_2}=m_{C}+2*m_O=12.01+2*16.00=44.01g/mol

Thus, the answer is PH₃.

Best regards.

You might be interested in
What accelerates the protons in the LHC?
belka [17]

Answer:

CERN uses a series of particle accelerators to accelerate protons to their end speeds in the LHC. The first accelerator is the linear accelerator Linac 2. At one end of Linac 2, hydrogen from a bottle is passed through an electric field to strip off the electrons, leaving positively charged protons.

Explanation:

3 0
3 years ago
Can someone help please
enyata [817]

Answer:

d. cells are made of atoms and molecules. :)

Explanation:

hope i helped

8 0
3 years ago
Read 2 more answers
A Is an ecosystem that is covered with water for at least part of the year
ruslelena [56]
It could be a tide pool but this is pretty vague
4 0
4 years ago
How do i balance the first chemical reaction above?? plz plz help
soldier1979 [14.2K]

Answer:

2K +F₂→ 2KF

Explanation:

When we balance an equation, we are trying to ensure that the number of atoms of each element is the same on both sides of the arrow.

On the left side of the arrow, there is 1 K atom and 2 F atoms. On the right, there is 1 K and 1 F atom.

Since the number of K atoms is currently balanced, balance the number of F atoms.

K +F₂→ 2KF

Now, that the number of F atoms is balanced on both sides, check if the number of K atoms are balanced.

<u>Left</u>

K atoms: 1

F atoms: 2

<u>Right</u>

K atoms: 2

F atoms: 2

The number of K atoms is not balanced.

2K +F₂→ 2KF

<u>Left</u>

K atoms: 2

F atoms: 2

<u>Right</u>

K atoms: 2

F atoms: 2

The equation is now balanced.

4 0
3 years ago
The particles of a gas are<br> O electrons<br> O atoms or molecules<br> O neutrons<br> O waves
Harrizon [31]
Answer:
atoms or molecules

Explanation:
Gas particles are constantly bumping into each other and the borders of their container.

8 0
2 years ago
Other questions:
  • Can someone please help me with this question? I don't understand it
    9·2 answers
  • Can someone help me with this question??
    13·1 answer
  • Please fast I need you to do this question FOR 15POINTS!!!!!!
    13·2 answers
  • A student has a solid block of steel and a solid plastic block of the same size.
    6·1 answer
  • How many moles of dinitrogen tetroxide (N2O4) are in 6.49 x 109 particles?
    11·1 answer
  • True or False? You can observe physical properties of matter without changing the identity of the substance
    9·2 answers
  • Which of the following is a difference between naming ionic and covalent compounds?
    12·1 answer
  • Can you compare the function of veins in plants with anything else you know.
    11·1 answer
  • 3. A group of inner planets are also known as------- *
    5·1 answer
  • The 225 g FeCl2 is about 1.8 moles.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!