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Which mass of O2(g) reacts completely with 5.6 grams of CO(g) to produce 8.8 grams of CO2(g)?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
The mass of a sample of nickel is determined to be 20.40 grams. How many significant figures are used to express this mass?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
A person with a body temperature of 37°C holds a cup of hot water in their hand. The temperature of the cup is 44°C. The air temperature is 22°C. Which phrase describes a heat transfer that occurs in this system?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
A solution has a mass of 2000. grams and contains 0.050 gram of dissolved solute. What is the concentration in parts per million of this solution?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
Which ion has the greatest mass?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
Which formula is the empirical formula for ethane, C2H6?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
Which combination of solute and solvent will form a saturated solution when thoroughly mixed at 20.°C?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
Which compound is most soluble in water?
from the cup to the hand
1
3.2 g
15 grams KClO3 in 100. grams H2O
25 ppm
4
E
CH3
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