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UNO [17]
3 years ago
6

What is the mass percent concentration of a saline solution prepared by dissolving 1.00 mol of Na2SO4 in 1.00 L of water?

Chemistry
1 answer:
Iteru [2.4K]3 years ago
8 0

Answer:

good luck hope you do good

Explanation:

good luck

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If a simple machine aduces the strength of a force, what must be increased?
Svetach [21]

Answer:

the work the simple machine performs (second choice)

5 0
3 years ago
Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
klio [65]

Answer:

10%

Explanation:

Given data:

Actual yield = 0.13 moles

Percent yield = ?

Solution:

Balanced chemical equation.

3H₂ + N₂    →   2NH₃

First of all we will calculate the mass of given moles of ammonia.

Number of moles = mass / molar mass

Mass = 0.13 × 17 g/mol

Mass = 2.21 g

2.21 g is experimental yield of ammonia.

Hydrogen is limiting reactant because only two moles of hydrogen present.

we will compare the moles of hydrogen and ammonia from balance chemical equation.                

                               H₂     :    NH₃

                                3       :     2

                                2       :     2/3×2 = 1.33 moles

Mass of ammonia

Mass = number of moles × molar mass

Mass = 1.33 mol × 17 g/mol

Mass = 22.61 g

Percent yield:

Percent yield = actual yield / theoretical yield × 100

Percent yield = 2.21 g / 22.61 g

Percent yield =9.8%  which is almost 10%

3 0
3 years ago
Suppose you increase your walking speed from 7 m/s to 12 m/s in a period of 2 s. What is your acceleration?
Arlecino [84]
Your speed is increased by 5 m/s in 2 seconds, so your acceleration is 5/2=2.5 m/s/s, or 2.5 metres per second squared.
6 0
3 years ago
Which mixture can be separated using filtration?
Sunny_sXe [5.5K]
<span>A. insoluble solids in water
</span><span>C. solids of different sizes</span>

5 0
3 years ago
What color are the stars on the diagram with the lowest surface temperatures?
Luba_88 [7]

Answer:

red supergiants is the answer

3 0
3 years ago
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