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Trava [24]
2 years ago
13

3. Round each measurement to three significant figures. Write your

Chemistry
1 answer:
Mekhanik [1.2K]2 years ago
4 0

In scientific notation, the measurement of each figure to three significant measurements are as follows:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

A significant figure is the digits in a number that is dependable and absolutely essential to express the quantity of a figure in positional notation. They are utilized to represent the appropriate degree of precision.

A scientific notation is used to express a large number in an easy decimal way multiplied by its power of 10.

From the given information, in scientific notation, and to three significant figures, we have:

  • 87.073 meters = 8.71 × 10⁻¹ meters
  • 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
  • 0.01552 meter = 1.55 × 10² meters
  • 9009 meters  = 9.01 × 10² meters
  • 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
  • 629.55 meters = 6.30 × 10² meters

Therefore, from the above concept, we can conclude that the scientific notation of each figure in three significant figures is shown in bold format.

Learn more about scientific notation here:

brainly.com/question/1705769?referrer=searchResults

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The united stated chemical industry produces more sulfuric acid, in terms of mass, than any other chemical. What is the mass of
Dahasolnce [82]

Answer:

318.749g

Explanation:

The find the mass,

We use this formula

Number of mole = mass/ molar mass

Since number of mole = 3.25mol

Let the number of mass be x

The molar mass of H2SO4

H - 1.00784 * 2= 2.01568

S - 32.065

O - 15.999 * 4 = 63.996

Note there are 2 moles of H and 4 moles of O and 1 mole of S

Molar mass of H2SO4 = 2.01568 + 32.065 + 63.996

= 98.07668g/mol

Number of mole= 3.25mol

3.25 = x / 98.07668

x = 3.25 * 98.07668

x= 318.749g

Hence, the number of mass is 318.749g

Hope it will help you.

7 0
2 years ago
Read 2 more answers
Give the clarification of heat and temperature on the basis of molecular motion?
sdas [7]

Explanation:

Heat is a form of thermal energy.

Heat is the sum of all the energy of the molecular motion in an object.

Temperature measures the average heat possessed by each molecule in a given substance.

 Molecules at a higher temperature possess more kinetic energy and they will move faster. This kinetic energy form is the heat variant of thermal energy.

Temperature is the measure of this heat energy of molecules.

8 0
3 years ago
3. At STP, how many liters of oxygen gas are required to react completely with 3.2 x 10^22
Mrrafil [7]

The volume of oxygen required to react with 3.2 * 10²² molecules of hydrogen is 0.56 L.

<h3>What is stoichiometric law?</h3>

The stoichiometric law has been given as the representation of the moles of product and reactant in a chemical reaction are represented by the stoichiometric coefficient.

It has been known that 1 mole of a compound has 6.023 * 10²³ molecules. Thus, the moles of hydrogen gas equivalent to 3.2 * 10²² molecules has been:

6.023 * 10²³ molecules = 1 mole

3.2 * 10²² molecules = 1/6.023 * 10²³ * 3.2 * 10²² moles

3.2 * 10²²  molecules = 0.05 moles

Thus, the moles of hydrogen gas available is 0.05 moles.

From the stoichiometric law, according to the balanced chemical equation,

2 moles of hydrogen requires = 1 moles of oxygen

0.05 moles of hydrogen requires = 1/2 * 0.05 moles oxygen

0.05 moles of hydrogen requires =  0.025 moles oxygen

Thus, the moles of oxygen required is 0.025 moles. At STP, a mole of gas been equivalent to 22.4 L . Thus, the volume of 0.025 moles oxygen has been:

1 mole = 22.4 L

0.025 moles = 22.4 * 0.025 L

0.025 mole = 0.56 L

Thus, the volume of oxygen required to react with 3.2 * 10²² molecules of hydrogen is 0.56 L.

Learn more about stoichiometric law, here:

brainly.com/question/23742235

#SPJ1

7 0
2 years ago
Would you like Brainliest?
lubasha [3.4K]

Answer:

yes please

Explanation:

6 0
2 years ago
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What is the volume of 1.4 mol of nitrogen gas at STP?
zaharov [31]

Answer:

31.36 Liters

Explanation:

1 mole is equal to 22.4 liters at STP so you can use the equation

1.4 moles * 22.4 liters

to find the volume.

6 0
3 years ago
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