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uranmaximum [27]
3 years ago
13

How many grams are in 0.040 moles zirconium (Zr)? Only 2 significant number?

Chemistry
1 answer:
pashok25 [27]3 years ago
7 0
<h2>Answer:</h2><h2>There are 3.64896 in 0.040 moles zirconium.</h2>

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Disagree or agree n provide evidence !!! pls n thank you​
stealth61 [152]

Answer: True

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5 0
3 years ago
What type of charge does a neutron have
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It is electric force
8 0
3 years ago
How many moles of N2 are in a flask with a volume of 0.5 L at a pressure of 400.0 kPa and a temperature of 300.0 K?
mylen [45]

Answer:

0.08moles

Explanation:

Given parameters:

Volume of gas  = 0.5L

Pressure of gas  = 400kPa

Temperature of gas  = 300K

Unknown:

Number of moles of N₂ = ?

Solution:

Applying the ideal gas law which is a combination of the three gas law: Boyle's law, Charles's law and Avogadro's law will solve this problem.

The ideal gas law is stated as;

              PV  = nRT

P is the pressure of the gas

V is the volume of the gas

n is the number of moles

R is the gas constant

T is the temperature of the gas

  We need to convert kPa of the pressure to atm which is a more comfortable unit to work with.

      400kPa will be \frac{400}{101.325}   = 3.95atm

Input the variables in the equation;

             3.95 x 0.5  = n x 0.082 x 300

                            n  = 0.08moles

5 0
3 years ago
How does omitting triethanolamine affect the properties and appearance of the hand lotion?
Phantasy [73]
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4 0
3 years ago
Read 2 more answers
How do separate the pure ethanol from the mixture of coloured aqueous solution with ethanol​
alina1380 [7]

Answer:

Fractional distillation is a method for separating a liquid from a mixture of two or more liquids. For example, liquid ethanol can be separated from a mixture of ethanol and water by fractional distillation. This method works because the liquids in the mixture have different boiling points. When the mixture is heated, one liquid evaporates before the other.

7 0
3 years ago
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