8 Answered Questions for the topic Honors Chemistry

02/22/22

Chemistry Help ASAP
2 HNO3 + Mg(OH)2 ----> Mg(NO3)2 + 2 H2ONO3 has a charge of -1.The equation is balanced. A 40-ml solution of Mg(OH)2 is neutralized by 12 ml of 0.9 M HNO3. How many moles of HNO3 were used to... more
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Honors Chemistry

04/28/21

N2 + 3H2 → 2NH3. What is the theoretical yield, the limiting reactant, and the percent yield? Please show work.
It has 3 moles of N2 that react with 3 moles of H2 and a actual of 31.63g
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Honors Chemistry Chemistry Chem Ap Chem

04/16/21

Chemistry .
If the total pressure of air is 133 kPa, what is the P O2 if it makes up 22% of the total pressure?
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Honors Chemistry Chemistry Chem Ap Chem

04/01/21

4. Magnesium is the limiting reactant in this experiment. Calculate the theoretical yield of MgO for each trial
Data Trial 1 Trial 2 Mass of empty crucible with lid 26.687g 26.696g Mass of Mg metal, crucible, and lid 27.105g 27.014g Mass of MgO, crucible, and lid  27.374g 27.218g Mass of Mg for each... more
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03/10/20

Please Help! Dilution Lab (Introduction to Spectrophotometry) Lab Question
Part 1: Determine the steps required to make 20.0 ml of 25 nanomoles (10^-6) solution of crystal violet from solid crystal violet (molar mass = 408 g) I'm not really sure what the question is... more
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Honors Chemistry Chemistry

05/17/19

A large flask with a volume of 936 mL has a mass of 134.66 g. Later filled to a pressure of 0.967 atm at 31 °C with unknown gas and given a new mass of 136.34 g. What is the molar mass of this gas?
A large flask with a volume of 936 mL is evacuated and found to have a mass of 134.66 g. It is then filled to a pressure of 0.967 atm at 31 °C with a gas of unknown molar mass and then reweighed to... more
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Honors Chemistry

09/07/15

Earth is approximately 1.5 ? 108 km from the sun. How many minutes does it take light to travel from the sun to Earth? The speed of light is 3.0 ? 108 m/s.
Very hard for me.... This is a question from my honors chemistry homework
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Honors Chemistry

09/07/15

At 40°C, the density of water is 0.99222 g/mL. Convert this to g/L.
This is a really hard question that I have for Honors Chemistry and I need help :(
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