A sample of 5.0 g of hydrogen gas reacts with 5.0 g of oxygen gas. 2H2 (g) + O2 (g) → 2H2O(l)

a. What is the theoretical yield of water?

b. What is the limiting reactant?

c. What is the excess reactant?

d. How much excess reactant remains?

e. If 4.2 g of water is actually produced, what is the percent yield?

A sample of 10.5 g of nitrogen reacts with 20.2 g of hydrogen to produce ammonia.

3H2 (g) + N2 (g) → 2NH3 (g)

a. What is the theoretical yield of water?

b. What is the limiting reactant?

c. What is the excess reactant?

d. How much excess reactant remains?

e. If 4.2 g of water is actually produced, what is the percent yield?

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

Which of the following is not true about the atomic model of substances?

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet