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4 years ago

Convert 8,740 cm3 to liters. 0.874 L 8.74 L 874 L 8740 L

Chemistry

2 answers:

Sonbull [250]4 years ago

7 0

Answer:

it s what it is which is This gives 8.74dm³ which equals 8.74 liters.

Ksju [112]4 years ago

5 0

The right answer is 8.74L

The liter is the equivalent of cubic decimetre (dm³).

to convert between cubic units one must multiply or divide by 1000 (and not 10). So 1dm³ equals 1000cm³ (cubic centimeter).

in this exercise we have 8740cm³ (the comma in 8,740 is just to separate each three digits into a number), we have to divide it by 1000 to convert it to dm³.

This gives 8.74dm³ which equals 8.74 liters.

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Calculate the number of grams of solute in 814.2mL of 0.227 M calcium acetate

kiruha [24]

Answer:

Mass = 29.23 g

Explanation:

Given data:

Volume of solution = 814.2 mL 814.2/1000 = 0.8142 L)

Molarity of solution = 0.227 M

Mass of solute in gram = ?

Solution:

Molarity = number of moles / volume in L

By putting values,

0.227 M = number of moles / 0.8142 L

Number of moles = 0.227 M × 0.8142 L

Number of moles = 0.184 mol

Mass in gram:

Mass = number of moles × molar mass

Molar mass of calcium acetate = 158.17 g/mol

Mass = 0.184 mol × 158.17 g/mol

Mass = 29.23 g

6 0

3 years ago

2) Convert 2.65*10^ ^ 25 atoms of Chlorine to moles of CI

Irina18 [472]

Answer:

22 mol

Explanation:

Given data:

Number of atoms of Cl = 2.65×10²⁵ atom

Number of moles of Cl = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.65×10²⁵ atom × 1 mol / 6.022 × 10²³ atoms

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3 years ago

Balance the following reaction in KOH (under basic conditions). What are the coefficients in for C3H8O2 and KMnO4 in the balance

GrogVix [38]

Answer:

Coefficient of $C_3H_8O_2=3$