464 Answered Questions for the topic AP chemistry
If 13 liters of nitrogen gas went into the reaction and hydrogen was unlimited, how many grams of ammonia were produced?
A 6.0 g sample of carbon is burned to produce carbon dioxide. The yield from the reaction is 60%. How much carbon dioxide was actually produced?
a13 g b44 g c3.6 g d22 g
50.0 mL of 0.10 M sodium chloride (NaCl) solution is mixed with 25.0 mL of 0.25 M silver nitrate (AgNO3) solution. After filtering and drying the product. 0.20 g of silver chloride was... more
Consider the following reaction taking place in a container fitted with a movable piston.2 SO2(g) + O2(g) → 2 SO3(g)Suppose we place two moles each of SO2 and O2 in the reaction vessel at 25oC and... more
The given molar mass for silver is 108 g/mol and for nitric acid is 63 g/mol. Which of the following determines teh minimum volume in (mL) of 8.0 M HNO3 needed to dissolve 2.0 g of silver metal?
how would i solve this????
If 1000. g of calcium carbonate reacts with 750. g of hydrochloric acid, what is the theoretical yield of calcium chloride according to this reaction?
____CaCO3 + _____HCl ---> _____CaCl2 + _____H2O + _____CO2
Chorine and fluorine react to form gaseous chlorine trifluoride. In an experiment, you started with 1.75 moles of chlorine and 8.68 moles of fluorine.
___Cl2 + ____F2 ---> ___ClF2a. What is the limiting reactant?b. What mass of chlorine triflouride can be made?c. Which reactant is in excess?d. What mass of the excess reactant remains unused?
Copper (II) oxide solid and hydrogen gas react to form elemental copper and water.
a. Write a balanced equation for the reaction.b. How many grams of Cu can be produced when 19.9g of CuO react with 2.02g of H2?
In an experiment, 0.400 mol Fe and 0.750 mol HCl are combined. How many moles of hydrogen will form?
____Fe + ____HCl ---> _____H2 + _____FeCl2
How can dissolved materials be moved from the outside to the inside of a cell when the inside concentration of the material is higher than the outside concentration?
a. Molecules can be moved into a cell against their concentration gradient if that transport is coupled with osmotic transport of water into the cell.b. Substances can be moved against a... more
Products of a nonspontaneous reactions have a higher potential energy than the reactants. Which of the following statements are true? Select all that apply.
Select all that applya. ATP hydrolysis is an endergonic reaction that provides energy to drive exergonic reactionsb. Energy for nonspontaneous reactions comes from energetic coupling between... more
why does ATP have high potential energy?
a. Four negative charges clustered together in the three phosphate groups raise the potential energy of the bonds.b. The repulsion between ribose and the phosphate groups raises the potential... more
Nucleotide structure question
https://quizlet.com/_69plfz (image is at the top)What is true of the picture above it is an RNA molecule it is a DNA molecule #1 is a purine #2 is a pyrimidine . the molecules 5' end is the... more
Saline hypertonic/hypotonic/isotonic question
A nurse attaches an IV to a patient that provides a saline solution that is 5% sodium chloride and 5% potassium phosphate and contains no other solutes. If the total solute concentration of a red... more
Which of the following atoms can participate in hydrogen bonds?
a. carbonb. oxygenc. nitrogend. b and ce. all of the above
Phospholipid Bilayer Question
Question: At the start of an experiment, a phospholipid-bilayer membrane that contains the glucose transporter (GLUT-1) but no other proteins separates a 1-liter solution of 1M NaCl (on the right)... more
If the pH of a solution is 10 and the concentration of protons is increased 10 fold by the addition of acid what is the new concentration of protons?
a. 10^-10 Mb. 10^-11 Mc. 10^-9 Md. 1 Me. none of the above
If you disrupt all hydrogen bonds in a protein what level of structure will be preserved?
a. tertiaryb. secondaryc. primaryd. quaternarye. all of the above
What bonds must be destroyed for an RNA chain to be broken down into its monomeric nucleotides?
A. Phosphodiester bondsB. Covalent bondsC. Hydrogen bondsD. A and Be. A, B, and C
What would be the molarity (M2) of the 100.00 mL (V2) of dilute HCl if you used a 25.00 (V1) mL volumetric pipet?
Quantitative dilution of solutions from higher to lower concentrations is a critical skill in this lab course. You have already diluted HCl from higher to lower concentrations using two different... more
Calculate the minimum concentration of the acid-salt pair needed to buffer a solution at a pH of 4.10 when 50 mL of 0.1 M NaOH is added.
Please help this is for a titration lab that is due tomorrow!!!!!!!!!!
How much NaCl needed to make 100ml of 0.9% NaCl solution with a needed volume of 20ml?
Need help with 2 AP chem questions.
Q1: A piece of magnesium was added to excess HCL at 725 mm Hg and 28.0°C. If 38.0 mL of hydrogen was collected over 20.0°C water, what is the mass of the magnesium?Q2: In the reaction Mg(s) +... more
Ap Chem question
How many kilojoules of heat are absorbed when 1.25 mol is converted from liquid at 15.0℃ at vapor at 25.0℃? The specific heat of (l) is 4.18 J/g℃. The heat of vaporization of water is 44.0... more