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
slava [35]
3 years ago
15

All of the following are units for pressure except _____. A. Pa B. psi C. atm D. Hg

Chemistry
1 answer:
MA_775_DIABLO [31]3 years ago
6 0

Answer:

B. psi

Explanation:

Pa is Pascal

atm is atmosphere

Hg is Mercury

hope it helps.

You might be interested in
Will give branliest
fomenos

60 Grams are produced due to the fact that it may not produce more due to the certain capacity that varies on the size of the cube.

5 0
2 years ago
A sample of propane(c3h8)has 3.84x10^24 H atoms.
deff fn [24]

Answer:

A) 14. 25 × 10²³ Carbon atoms

B) 34.72 grams

Explanation:

1 molecule of Propane has 3 atoms of Carbon and 8 atoms of Hydrogen.

The sample has 3.84 × 10²⁴ H atoms.

If 8 atoms of Hydrogrn are present in 1 molecule of propane.

3.84 × 10²⁴ H atoms are present in

\mathfrak{ \frac{3.8 }{8} \times 10 ^{24}}

<u>= 4.75 × 10²³ molecules of Propane</u>.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

No. of Carbon atoms in 1 molecule of propane = 3

=> C atoms in 4.75× 10²³ molecules of Propane = 3 × 4.75 × 10²³

<u>= 14.25 × 10²³ </u>

<u>________________________________________</u>

<u>Gram</u><u> </u><u>Molecular</u><u> </u><u>Mass</u><u> </u><u>of</u><u> </u><u>Propane</u><u>(</u><u>C3H8</u><u>)</u>

= 3 × 12 + 8 × 1

= 36 + 8

= 44 g

1 mole of propane weighs 44g and has 6.02× 10²³ molecules of Propane.

=> 6.02 × 10²³ molecules of Propane weigh = 44 g

=> 4. 75 × 10²³ molecules of Propane weigh =

\mathsf{ \frac{44 }{6.02 \times  {10}^{23} } \times 4.75 \times  {10}^{23}  }

\mathsf{  = \frac{44 }{6.02 \times   \cancel{{10}^{23} }} \times 4.75 \times \cancel{ {10}^{23}}  }

\mathsf{  = \frac{44 }{6.02 } \times 4.75   }

<u>= 34.72 g</u>

8 0
2 years ago
How many grams are in 2.45E24 formula units of Fp3BZ2? The molar mass of Fp3Bz2. is 97.05<br> g/mol.
dlinn [17]

Answer:

394.99g

Explanation:

The number of moles of a substance can be calculated by dividing the number of atoms of such substance by Avagadro's number (6.02 × 10^23)

n = nA ÷ 6.02 × 10^23

The number of atoms of Fp3BZ2 in this question is 2.45E24 formula units i.e. 2.45 × 10^24

n = 2.45 × 10^24 ÷ 6.02 × 10^23

n = 2.45/6.02 × 10^(24-23)

n = 0.407 × 10¹

n = 4.07moles

Using mole = mass/molar mass

Where; molar mass of Fp3Bz2. is 97.05

g/mol.

mass = molar mass × mole

mass = 97.05 × 4.07

mass = 394.99g

4 0
3 years ago
Explain why the nucleus of an atom is positively charged but the overall charge of an atom is neutral
gtnhenbr [62]

Answer:

The nucleus is positively charged because it contains all of the protons however the charge of an atom is neutral because there is an equal amount of protons (positive) and electrons (negative) meaning the opposite charges cancel each other out therefore making the atoms overall charge neutral.

Explanation:

8 0
2 years ago
What is the balanced form of the chemical equation shown below?
Tanzania [10]
B. 1, 1, 1, 2
Explanation:
You only need to balance the NaNO3 on the right. Since there is 2 NO3 on the left, you need to put a 2 in front of the NaNO3 on the right. Everything else is already balanced so the only coefficient needed is 2 in front of the NaNO3.
7 0
2 years ago
Other questions:
  • T is possible to produce a perfect crystalline solid that does not contain any vacancies?
    6·2 answers
  • When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpa
    6·1 answer
  • Litmus paper can be used to determine the _______ of a substance.
    12·1 answer
  • If a sample of cork has a mass of 2.88 g and a volume of 12.0 mL, what is the density of the cork? Show your work.
    6·1 answer
  • Can anybody please with this ohms law
    13·1 answer
  • What is the building block of matter :(?
    14·1 answer
  • In which type of chemical reaction do two or more substances combine to form one substance?
    10·2 answers
  • Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o
    14·1 answer
  • The molar mass of dibromomethane (CH2Br2) is larger than the molar mass of dichloromethane (CH2Cl2).
    8·1 answer
  • How sedimentary rock is formed
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!