07/15/22

Chemistry - Gas Stoichiometry
Gas A has a molar mass 17.5 while gas B has a molar mass 111.7. Which gas will effuse faster? A or B?
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10/28/21

How many milliliters of 15.7 M of H2SO4 are needed to prepare 600.0 mL of 0.10 M of H2SO4?
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01/08/21

plz covert thesee URGENT all of them plz
convert1. 1.29 x 10^24 atoms of HF to grams2. 3.14g of H2O to molecules3. 2.79g NH3 to atoms4. 4.90 mol Al2O3 to grams. To atoms5. 3.56g of Cu to atom6. Mass of a sample of NO2 with 1.54 x 10^24... more
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01/08/21

Helppp PLZ urgenttt
convert 1. 1.29 x 10^24 atoms of HF to grams2. 3.14g of H2O to molecules3. 2.79g NH3 to atoms4. 4.90 mol Al2O3 to grams. To atoms5. 3.56g of Cu to atoms6. Mass of a sample of NO2 with 1.54 x 10^24... more
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12/18/20

Help please ASAP!

A sample consisting of 2.0 mol CO2 occupies a fixed volume of 15.0 dm3at 300 K. When it is supplied with 2.35 kJ of energy as heat its temperature increases to 341 K. Assuming that CO2 is described... more
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12/17/20

Enumerate at least three concrete applications of the importance of Mole concept in the field of Medicine.
The only applications I can think of are so doctors can avoid giving an overdose to their patients. Any suggestion is welcomed. Thank you!
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11/13/20

Anthony walks to the pizza place for lunch. He walks 1 km east, then 2 km west and then 1 km east again. What distance did he cover? What was his displacement?
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11/01/20

Assume the imaginary metal, M, forms an cation with a +1 charge, M+. Add the formulas of the two products in the acid-base neutralization reaction below.

The formula of the salt formed should go in the very last blank on the right. Balance the equation by typing in the smallest whole-number coefficients that would balance the equation in front of... more
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10/29/20

Someone please help me with this
Cupric chloride hydrate has a formula weight of 170 grams per mole. What is the formula weight of the metal salt alone? g/mol 3.  How many moles of water are attached to the metal salt in... more
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10/19/20

If 74.5 g of ammonium nitrate was the actual amount obtained in a reaction for which the percent yield was 87.2% what was the theatrical yield
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10/19/20

For each of the following acid-base reactions, calculate how many grams of each acid are necessary to completely react with and neutralize 2.6 g of the base. Part A HCl(aq)+NaOH(aq)→H2O(l)+NaCl(aq)
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09/26/20

What is the mass of hydrogen and oxygen needed to make 29 grams of hydrogen peroxide?
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08/28/20

I don’t know how to solve this problem. The conversions are confusing to me and don’t know how to start
A patient is required to take an IV drug for cancer treatment. The required dosage is 5.0 mg drug her lb patient body weight every day. Each of the bags of the drug contains 250 mg drug. If you are... more
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08/13/20

what is the mass of 5.34x10^23 molecules of sodium hydrogen carbonate
i need the calculations
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08/12/20

jin bed and brishir raised 135.78 for there soccer team. deb raised 34 less than bashir who raised 29 more than jin. how much did jin raise
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08/12/20

8.78 grams of nitrogen gas are allowed to react with 103 grams of hydrogen gas what’s is the Maximus mass of ammonium that can be formed

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08/09/20

algebra question
35.If f(x) = x^2− x express f(a− 2) in factored form.
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08/08/20

The following information is given for copper at 1atm
boiling point = 2567 °C Hvap(2567 °C) = 305 kJ/mol melting point = 1083 °C Hfus(1083 °C) = 13.0 kJ/mol specific heat solid= 0.385 J/g°C specific heat liquid = 0.494 J/g°C What is H... more
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08/08/20

Find the force (physics)
Two humans are carrying a rod of lenght 2 m and mass of 50 kg. One human holds the rod on one end, the other on the another end. Two humans are carrying a rod of lenght 2 m and mass of 50 kg. One... more
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08/07/20

How many seats are there in each class?
A plane has 360 total seats, which are divided into economy class and business class. For every 13 seats in economy class, there are 5 seats in business class. How many seats are there in each class?
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10/11/16

A closed container has 3.06 ·1023 atoms of a gas.
A closed container has 3.06 ⋅1023 atoms of a gas. Each atom of the gas weighs 1.67 ⋅10–24 grams. Which of the following shows and explains the approximate total mass, in grams, of all the atoms of... more
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10/06/16

If f(x) = 3x + 2, find f(f–1(14))
this is an algebra 2 word problem 
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10/06/16

If the volume of tea in a tea bag is approx. 23cm^3, calculate the depth, d, of tea leaves in the bag. Round your final answer to 1 decimal place.
The slant height of the pyramid = 7.7cm The side of the base of the pyramid = 3.5cm The perpendicular height of the pyramid = 7.291cm The Base area = 12.25cm^2   FULL WORKING PLEASE!!!
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10/05/16

Help me with this question please
A company manufactures helmets and bats. They sell six times as many bats as helmets. If they make a profit of $3 per bat and $5 per helmet, how many bats and helmets were sold if the company... more
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10/03/16

Three ropes in figure p5.1 are tied to a small ,very light ring. Two of the ropes are anchored to walls at right angles ,and third rope pulls as shown...
What are tensions 1 and 2 , the magnitudes of the tension forces in the first two ropes?    Hi everyone, please show me steps. I dont know how to do it. The diagram for the situation is... more
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