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Ap Chemistry Chemistry Chem Ap Chem

03/17/19

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

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Ap Chemistry Chemistry Chem Ap Chem

03/17/19

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?

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Ap Chemistry Chemistry Chem Ap Chem

03/17/19

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?

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Ap Chemistry Chemistry Ap Chem

03/17/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/11/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/10/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/10/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

Which of the following atoms can participate in hydrogen bonds?

a. carbonb. oxygenc. nitrogend. b and ce. all of the above

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Biology Chemistry Biochemistry

03/09/19

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

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Ap Chemistry Chemistry Organic Chemistry

02/26/19

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

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Ap Chemistry Chemistry

01/29/19

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!!!!!!!!!!

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Ap Chemistry Chemistry

01/23/19

How much NaCl needed to make 100ml of 0.9% NaCl solution with a needed volume of 20ml?

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Ap Chemistry Chemistry

01/15/19

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

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Ap Chemistry Heat Heat Of Vaporization

12/11/18

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

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Ap Chemistry Enthalpy

12/07/18

What is the specific heat capacity of NaOH(aq)

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Ap Chemistry Chemistry

11/26/18

predicting hybridization

For the following structure, predict the hybridization about the central atom. Use superscripts as needed.X---Y---X*Y has 6 lone pairs

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Ap Chemistry Chemistry

11/26/18

What is the net ionic equation for the reaction between Li2CO3(aq) and HCl(aq).

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Ap Chemistry Chemistry Ap Chem

11/16/18

Calculate the percent ionization of 0.125 M lactic acid in a solution containing 8.5×10−3 M sodium lactate.

Express your answer using two significant figures.

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Ap Chemistry

10/29/18

Ionization energy

Arrange the following species in order of decreasing first ionization energy:ArCaXeNe

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Ap Chemistry

10/26/18

enthalpy change

When 3.02 g of NH4Cl is dissolved in enough water to make 20.05 mL of solution, the temperature dropped from 19.8°C to 9.1°C. Calculate the enthalpy change (in kJ) when 1 mole of NH4Cl is... more

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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?

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.

Copper (II) oxide solid and hydrogen gas react to form elemental copper and water.

In an experiment, 0.400 mol Fe and 0.750 mol HCl are combined. How many moles of hydrogen will form?

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?

Products of a nonspontaneous reactions have a higher potential energy than the reactants. Which of the following statements are true? Select all that apply.

why does ATP have high potential energy?

Nucleotide structure question

Saline hypertonic/hypotonic/isotonic question

Which of the following atoms can participate in hydrogen bonds?

Phospholipid Bilayer Question

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?

If you disrupt all hydrogen bonds in a protein what level of structure will be preserved?

What bonds must be destroyed for an RNA chain to be broken down into its monomeric nucleotides?

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?

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.

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.

Ap Chem question

What is the specific heat capacity of NaOH(aq)

predicting hybridization

What is the net ionic equation for the reaction between Li2CO3(aq) and HCl(aq).

Calculate the percent ionization of 0.125 M lactic acid in a solution containing 8.5×10−3 M sodium lactate.

Ionization energy

enthalpy change

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