Chemistry, 25.02.2021 14:00 e03per503

In a COMPLETE PARAGRAPH, describe the procedure to calculating the mass of a produce produced in a chemical reaction if the mass of the reactant is given.

In a COMPLETE PARAGRAPH, describe the procedure to calculating the mass of a produce produced in a

Answers: 1

Show answers

Answers

Answer from: shira35

0.91 g of methane is required.

Explanation:

The balanced chemical equation will be:

$CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)$

The mole ratio of CH_4 : H_2O = 1: 2

Molar masses of CH_4 : H_2O = 16: 18

36 g of water is produced from = 16 g of CH_4

Thus 2.05 g of water is produced from = $\frac{16}{36}\times 2.05=0.91g$ of CH_4

Thus in order to calculate the mass of produce produced when the mass of reactant is given we first need to write the balanced equation. Then the mole ratio is determined and then molar masses and dimensional analysis is used to find the mass of product.

Answer from: Quest

Answer: abeexplanation:

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.

Answer from: Quest

i'm pretty sure it is letter c.) car

Another question on Chemistry

Chemistry, 22.06.2019 12:30

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Answers: 1

Answer

Chemistry, 22.06.2019 15:30

What is the atomic number of an atom that has 6 protons

Answers: 1

Answer

Chemistry, 22.06.2019 18:30

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Answers: 2

Answer

Chemistry, 22.06.2019 21:30

Plzz a sample of table sugar (sucrose, c12h22o11) has a mass of 7.801 g. ● a) calculate the number of moles of c12h22o11 in the sample b) calculate the number of moles of each element in c12h22o11 (number of moles of c, number of moles of h & number of moles of o) in the sample. (use your answer from part a as your starting point.) show your work and highlight your final answer. calculate the number of atoms of each element in c12h22o11 (number of atoms of c, number of atoms of h & number of atoms of o) in the sample. (use your answers from part b as your starting for each element.) show your work and highlight your final answer.

Answers: 1

Answer

You know the right answer?

In a COMPLETE PARAGRAPH, describe the procedure to calculating the mass of a produce produced in a c...

Questions