Chemistry Answers

If you have 50g of Aluminum, how much cadmium (ll) chloride would you need to completely burn? What are the theoretical amounts of aluminum chloride that will be produced?

 Brass is a copper- zinc alloy. If the concentration of zinc is relatively low, the brass has a golden color and is often used for inexpensive jewelry. If a 35.0g pendant contains 1.7g of zinc, what is the % by mass of zinc in brass? *

Write a balanced chemical equation for the overall cell reaction represented as a) Fe2+/Fe3+ // MnO4 - /Mn2+ b) Cr3+/Cr2O7 2- // ClO3 - /Cl-

Sulfuryl chloride, SO2Cl2,decomposes when heated.                                                                                                                                                                                                       SO2Cl2 (g) -----> SO2 (g) + Cl2 (g)                                                                                                                                                                                                                           In an Experiment, the initial concentration of SO2Cl2 was 0.024 mol/L. If the rate constant is 2.2 x 10^-5 s^-1, what is the concentration of SO2Cl2 after 2.5 hours?

Determine the volume, in ml, of a 208.7-g sample of an alloy with density of 0.258 lb/in^3

what mass of nickel is in a 2.4 kg sample of propanol if the concentration is 20 ppb ?

Steve races to the nearest taco stand at lunchtime and sees that his pedometer recorded his peak speed at 87.7 cm/s. What was Steve's peak speed in kilometers per hour?

For the reaction C + 2H₂ → CH₄, how many grams of hydrogen are required to produce 3.6 moles of methane, CH₄ ?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

2 NH₃  +  3 CuO → 3 Cu  +  N₂  +   3 H₂O

In the above equation, how many grams of N₂ can be made when 18.4 moles of CuO are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

3 Cu  +   8HNO₃ → 3 Cu(NO₃)₂   +  2 NO  +  4  H₂O

In the above equation, how many grams of water can be made when 3.5 moles of HNO₃ are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.: