Chemistry Flashcards


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created 6 years ago by Ally_Berwick
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1

Convert 3.92 oz to grams.

112 grams

2

Convert a speed of 839 mi/hr to units of feet per minute. Also show the unit analysis by dragging components into the unit-factor slots below.

73832

3

If the caffeine concentration in a particular brand of soda is 2.73 mg/oz, drinking how many cans of soda would be lethal? Assume 10.0 grams of caffeine is a lethal dose, and there are 12 oz in a can.

305.32 cans10

4

A chemistry student is 159 cm tall and weighs 45.8kg. What is her height in inches and weight in pounds?

weight-101 lb

height- 62.6 inch

5

The mercury content of a stream was believed to be above the minimum considered safe- 1 part per billion (ppb) by weight. An analysis indicate that the concentration was 0.68 parts per billion. What quantity of mercury in grams was present in 15.0 L of the water, the density of which is 0.998 g/ml? (1 ppb hg= 1ng hg/ 1 g water)

10.18 x 10-6

6

As n instructor is preparing for an experiment, he requires 225g phosphoric acid. The only container readily available is a 150 ml Erlenmeyer flask. Is it large enough to contain the acid, whose density is 1.83 g/ ml

yes, the acid is 123 ML

7

Determine the number of sig figs in each

a- 0.0055

b- 70200

c-99.80

A-2

B-3

C-4

8

Name the ionic compounds

a- Sr(C2H3O2)2

b-Ti(CN)4

c- Fe(HCO3)2

a- strontium acetate

b- titanium (IV) cyanide

c- iron (II) bicarbonate

9

Name the ionic compounds

a- manganese (VII) arsenide

b-ammonium oxide

c-lead (IV) sulfate

a- Mn3As7

b- (NH4)2O

c- Pb(SO4)2

10

What is the correct formula for boron trifluoride

BF3

11

What is the correct name for B2Cl4?

diboron tetrachloride

12

What is the correct formula for diphosphorus pentoxide?

P2O5

13

what is the empirical formula of

40.00% carbon

6.63 % Hydrogen

53.37 % Oxygen

C1 H2 O1

14

which has the highest number of H atom?

A- 0.80 mol CH4

B- 0.50 mol C2 H6

C- 0.60 mol C3 H8

C