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dangina [55]
3 years ago
14

Convert 850 mm Hg to kPa. *

Chemistry
1 answer:
Feliz [49]3 years ago
4 0

Answer:

113.324 KPA

Explanation:

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A solution that holds more solute than it normally can under the conditions at a given temperature is _____.
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A student preforms a chemical reaction in which 35 grams of hydrogen and 65 grams of oxygen reacted to form water. What is the m
tatuchka [14]

Answer:

Mass of water = 73.08 g

Explanation:

Given data:

Mass of hydrogen = 35 g

Mass of oxygen = 65 g

Mass of water = ?

Solution:

First of all we will write the balanced chemical equation:

2H₂  + O₂   →    2H₂O

Number of moles of hydrogen = mass/ molar mass

Number of moles of hydrogen =  35 g/ 2 g/mol

Number of moles of hydrogen = 17.5 mol

Number of moles of oxygen = 65 g / 32 g/mol

Number of moles of oxygen = 2.03 moles

Now we compare the moles of water with moles hydrogen and oxygen.

                                     H₂               :              H₂O

                                      2                :                2

                                    17.5              :              17.5

                                       O₂             :            H₂O

                                      1                :               2

                                      2.03         :             2× 2.03 =4.06 mol

Number of moles of water produced by oxygen are less so oxygen is limitting reactant.

Mass of water:

           Mass of water = number of moles × molar mass

          Mass of water = 4.06 mol × 18 g/mol

           Mass of water = 73.08 g

8 0
3 years ago
What are 2 ways microscopes have changed and improved from the 16th century to present day?
Ivan

Answer:

Glass and lens making have improved, and electronic features for microscopes have become available

Explanation:

5 0
2 years ago
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