d. 7.8 x 10-4 ug/mL6. To prepare a 1L of 1000 ppm solution of calcium chloride, how many grams of calciumchloride dihydrate should be weighed? (Calcium= 40.08 g/mole, Chlorine= 35.35 g/mole,Hydrogen= 1.008 g/mole, Oxygen= 16.00 g/mole)a. 1.000 gramb. 1.1098 gramsc. 1.6130 gramsd. 1.5130 grams7. Choose the formula to be used when you have to prepare a 0.3 N solution of NaOH form5 N NaOH. c. place the flask in a cold water bath.d. place the flask in a freezer with a temperature of -20°C4. How many grams of sodium hydroxide is needed to prepare 500 mL of 0.5 N sodiumhydroxide? (Sodium= 22.99 g/mole, Oxygen= 16.00 g/mole, Hydrogen= 1.008 g/mole)a. 13.8115 gb. 10.2515 gc. 15.7470 gd. 9.9995 g5. The scientific notation of 0.0078 pg/mL of compound A is?

4. How many grams of sodium hydroxide is needed to prepare 500 mL of 0.5 N sodium hydroxide? (Sodium= 22.99 g/mole, Oxygen= 16.00 g/mole, Hydrogen= 1.008 g/mole) a. 13.8115 g b. 10.2515 g c. 15.7470 g d. 9.9995 g

4. How many grams of sodium hydroxide is needed to prepare 500 mL of 0.5 N sodium hydroxide? (Sodium= 22.99 g/mole, Oxygen= 16.00 g/mole, Hydrogen= 1.008 g/mole) a. 13.8115 g b. 10.2515 g c. 15.7470 g d. 9.9995 g

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

d. 7.8 x 10-4 ug/mL
6. To prepare a 1L of 1000 ppm solution of calcium chloride, how many grams of calcium
chloride dihydrate should be weighed? (Calcium= 40.08 g/mole, Chlorine= 35.35 g/mole,
Hydrogen= 1.008 g/mole, Oxygen= 16.00 g/mole)
a. 1.000 gram
b. 1.1098 grams
c. 1.6130 grams
d. 1.5130 grams
7. Choose the formula to be used when you have to prepare a 0.3 N solution of NaOH form
5 N NaOH.

c. place the flask in a cold water bath.
d. place the flask in a freezer with a temperature of -20°C
4. How many grams of sodium hydroxide is needed to prepare 500 mL of 0.5 N sodium
hydroxide? (Sodium= 22.99 g/mole, Oxygen= 16.00 g/mole, Hydrogen= 1.008 g/mole)
a. 13.8115 g
b. 10.2515 g
c. 15.7470 g
d. 9.9995 g
5. The scientific notation of 0.0078 pg/mL of compound A is?

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