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
TiliK225 [7]
3 years ago
12

How many moles are present in 281 grams of arsenic

Chemistry
1 answer:
Murljashka [212]3 years ago
6 0
The molar mass or As is 74.9g. Start with 281g multiply by (1mol/74.9g) = 3.75 mols

Put what you don’t want on the bottom (in this case grams) so they the u it’s cancel (if you multiply by grams and the divide by grams they cancel. Ultimately leave what you want on the top ( This case mols) then do the math
You might be interested in
To pull up a bucket of water from a well, George pulled hard on a handle to wind up a rope. Which kind of energy was George appl
mote1985 [20]

b frictional energy

is the correct answer

4 0
3 years ago
Mercury thermometers work because mercury ____ when it is warmed
kap26 [50]
Mercury expands when it is heated. This process is called thermal expansion.
5 0
3 years ago
Joebert had a rectangular cup and filled it with water. He measured the water's mass and volume. Then he got a density of 1.25g/
ANTONII [103]

Answer:

Percent error = 25%

Explanation:

Given data:

Measured density of water = 1.25 g/mL

Accepted density value of water = 1 g/mL

Percent error = ?

Solution:

Formula:

Percent error = (measured value - accepted value / accepted value) × 100

Now we will put the values in formula:

Percent error = (1.25 g/mL - 1 g/mL /1 g/mL )× 100

Percent error = (0.25 g/mL /1 g/mL )× 100

Percent error = 0.25 × 100

Percent error = 25%

5 0
3 years ago
Marshall determines that a gas has a gage pressure of 276 kPa. What's the absolute pressure of this gas?
Mariana [72]
C.... 376 tbh just took the test and was right
5 0
3 years ago
Read 2 more answers
Choose the weaker acid in each of the following pairs:H₂SO₃ or H₂SO₄
WINSTONCH [101]

H₂SO₃ is weaker acid than  H₂SO₄.

The bonding power of an acid is typically influenced by the size of the "SO₄" atom; the smaller the "SO₄" atom, the stronger the H-A bond. The atoms get larger and the bonds get weaker as you proceed down a row in the Periodic Table, strengthening the acids.

<h3>Describe acid.</h3>

The term "acid" refers to any molecule or ion that can donate a proton (a Brnsted-Lowry acid) or establish a covalent bond with an electron pair (a Lewis acid). The first class of acids is the proton donors, also known as Brnsted-Lowry acids.

Its chemical name is lysergic acid diethylamide, or LSD as it is more often known. Because it has a potent hallucinogenic impact, using it could alter how you see the world and its objects. The effects of LSD are referred to as tripping.

The term "acid" is frequently used to denote aqueous solutions of acids with a pH lower than 8, even though the technical meaning of the term only pertains to the solute.

To learn more about acid visit:

brainly.com/question/14072179

#SPJ4

3 0
2 years ago
Other questions:
  • In certain species of roses, white roses and red roses are incompletely dominant to each other.When a red rose and a white rose
    13·1 answer
  • Calculate k′, the equilibrium constant, for the system 1/2h2+fdox→fdred+h+.
    12·1 answer
  • You place ice cubes into a glass of lemonade what happens to make the lemonade to get cold
    15·2 answers
  • Which level of organization describes the tropical savanna
    15·2 answers
  • How long must you immerse equipmemt and utensils in a non-chlorine sanitizing solution
    9·1 answer
  • What is the mass of 0.28 moles of iron
    15·2 answers
  • Someone please help me it’s an assessment on Stochiometry
    11·1 answer
  • Why is Darwins theory of evolution by natural selection not just a theory
    13·1 answer
  • A Cylinder has a diameter of 20 m and a height of 100 cm.
    14·2 answers
  • How did dmitri mendeleev arrange the periodic table.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!