How many grams of h3po4 is needed to prepare solution

Assignment Help Chemistry
Reference no: EM13184231

1. How many grams of H3PO4 is needed to prepare 550mL of a 0.31N solution? (assume all H+ enter reaction)

A. 5.6

B. 1.9

C. 1.7

2. Calculate the volume in, mililiters, of a 1.50M NaHCO3 solution that provides 28.0g NaHCO3

A. 500

B. 222

C. 0.222

3. In between 40oC and 50oC, a decrease in temperature will increase the solubility of Na2SO4

True

False

4. Calculate the N of 20g H3PO4 in 500ml of solution (assume all H+ enter solution)

A. 1.2

B. 4.1

C. 2.8

5. Calculate the M of a 4.1m KCl solution if it's density is 1.10g/ml

A. 3.0

B. 29

C. 3.5

6. The mass percent, %(m/m), for 55.0g KOH in 178.0g H2O is:

A. 55

B. 24

C. 178

D. 31

Reference no: EM13184231

Questions Cloud

Green reveloution-man''s war against hunger and deprivation : In his lecture, Norman Borlaug stated, "The green reveloution has won temporary sucess in man's war against hunger and deprivation; it has ginen man a breathing space".
Compute the ph of a solution conposed ammonia : Calculate the pH of a solution conposed of 0.0831M ammonia (NH3) and 0.113M ammonium chloride (NH4Cl).
Find out the density of approximately samples : Describe the technique you would use to determine the density of approximately 5 gram samples of the following at 20 degrees celcius and 1 atmosphere pressure:
Calculate the lime requirement : Calculate the lime requirement (LR) of a soil in tonnes CaCO3/ha-20 cm given the following results of a LR determination in the laboratory using lime water (Ca(OH)2) where (Ca(OH)2) has a CaCO3 equivalent of 134%.
How many grams of h3po4 is needed to prepare solution : Calculate the volume in, mililiters, of a 1.50M NaHCO3 solution that provides 28.0g NaHCO3, How many grams of H3PO4 is needed to prepare 550mL of a 0.31N solution?
Claim to the oregon country rested : The United States' claim to the Oregon Country rested on all of the following except the
Critique a variance report : Is the above variance report useful for evaluating how well revenues and costs were controlled during April? Why, or why not?
Computer crime-describe the specific security breach : Describe the specific security breach that the organization experienced. What type of digital attack was it? Was it internal or external?
State the rf of the unknown is too close to the baseline : Running a TLC of Unknown Compound X using eluent hexane:ethyl acetate 4:1. The Rf of the unknown is too close to the baseline. What should I do?

Reviews

Write a Review

 

Chemistry Questions & Answers

  What would be expected mass of the cooled dehydrated salt

If a 2.743g sample of MgSO4.7H2O were heated strongly,what would be the expected mass of the cooled dehydrated salt

  What precentage of nh4co2nh2 decomposed

The equilbrium constant for the decompositon at 25 degrees C is 2.3 X 10 ^ -4. At 25 degrees C , 7.5 g of NH4CO2NH2 is sealed in a 10 L flask and allowed to decompose.

  State hbr converting some of the h

A current of 11.3 A is applied to 1.25L of a solution of .552M HBr converting some of the H+ to H2(g).

  Calculate the heat of solution of nacl

When 5.19g of NaCl is dissolved in 85.0 mL of water at 22.2 degrees Celsius, the temperature of water drops by 6.6 degrees Celsius. Calculate the heat of solution of NaCl.

  How many grams of water should be produced

Suppose 312 grams of methylamine and 475 grams of oxygen are mixed together. How many grams of water should be produced?

  What is the new water level in the cylinder

A graduated cylinder contains 152 mL of water. A 14.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 16.0 g piece of lead are added. What is the new water level in the cylinder?

  How many groups could be formed

A dancehall contains 173 men and 238 women. A certain "promenade" calls for the formation of groups, with each group consisting of one man with two women.

  Calculate the heat required

Calculate the heat required to raise the temperature of 125 g of water are heated from 20.0oC to 100oC based on a specific heat of water of 4.184 J/g oC.

  Write and balance the molecular equation

Mixing 1.0 M BaCl2 + 1.0 M K2SO4 gives what white participate. Write and balance the molecular equation.

  State and measures the conductivity of an solution

A student measures the conductivity of an Fe2(SO4)3 solution and determines it to be a strong electrolyte. The student incorrectly lists the species in solution as O-2, S-2, Fe+3. Give the correct list of species in the solution.

  What is the mol fraction na2so4 in a solution

What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?

  Compute change of ph value

calculate change of pH value when we add 100mL of 0,4M HCl to 100mL of 0,4M NH3. K(NH3)

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd