Chemistry, 21.04.2020 00:18 kykylove1126
Which component is missing from the process of photosynthesis?
Carbon Dioxide +
+ Sunlight -Glucose + Oxygen
Light Energy
Sugar
Plants
Water
Answers: 2
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) β h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 Β°c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 21:30
Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration
Answers: 1
Chemistry, 23.06.2019 03:00
In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas
Answers: 2
Chemistry, 23.06.2019 05:30
Idont understand it 1.what is the boiling point of a solution of 675 grams of ethylene glycol (c2h6o2) in 2.50 liters of water?
Answers: 2
Which component is missing from the process of photosynthesis?
Carbon Dioxide +
+ Sunlig...
Carbon Dioxide +
+ Sunlig...
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