1. how many grams of b are present in 3.35 grams of boron tribromide ?
grams b.
2. how many grams of boron tribromide contain 4.69 grams of br ?
boron tribromide.
3. how many grams of n are present in 4.11 grams of nitrogen trifluoride ?
n.
4. how many grams of nitrogen trifluoride contain 3.07 grams of f ?
nitrogen trifluoride.
5.how many grams of co3+ are present in 1.16 grams of cobalt(iii) iodide?
co3+.
6. how many grams of cobalt(iii) iodide contain 2.28 grams of co3+?
cobalt(iii) iodide.

The answer to your question is:

Explanation:

1. How many grams of B are present in 3.35 grams of boron tribromide ?

grams B.

MW BBr₃ = 251 g

                            251 g of BBr₃  11 g of B

                             3.35 g              x

                           x = (3.35 x 11) / 251 = 0.147 g of B

2. How many grams of boron tribromide contain 4.69 grams of Br ?

grams boron tribromide.

MW BBr₃ = 251g

                             251g of BBr₃   80 g of Br

                                   x               4.69 g

                           x = (4.69 x 251)/ 80 = 14.71 g of BBr₃

3. How many grams of N are present in 4.11 grams of nitrogen trifluoride ?

grams N.

MW NF₃ = 71 g

                               71 g of NF₃       14 g of N

                               4.11 g                   x

                               x = (4.11 x 14) / 71 = 0.81 g of N

4. How many grams of nitrogen trifluoride contain 3.07 grams of F ?

grams nitrogen trifluoride.

MW NF₃ = 71

                                71 g of NF₃   19 g of F

                                  x                 3.07 g

                                 x = (3.07 x 71) / 19 = 11.5 g of NF₃

5.How many grams of Co3+ are present in 1.16 grams of cobalt(III) iodide?

grams Co3+.

MW CoI₃ = 440 g

                             440 g of CoI₃  59 g of Co

                              1.16 g               x

                              x = (1.16 x 59) / 440 = 0.16 g of Co

6. How many grams of cobalt(III) iodide contain 2.28 grams of Co3+?

grams cobalt(III) iodide.

MW CoI₃ = 440 g

                             440 g of CoI₃  59 g of Co

                               x                     2.28 g of Co⁺³

                              x = (2.28 x 440) / 59

                              x = 17 g of CoI₃

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them