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professor190 [17]
4 years ago
9

6. What is a polyatomic ion? (You should also memorize the name, formula, and charge of the polyatomic ions listed in the lectur

e materials)
Chemistry
1 answer:
strojnjashka [21]4 years ago
6 0
A polyatomic ion is a group of elements that has a charge that is not 0. for example the charge of P04 is -3 
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What’s the total mass of the rock sample
mamaluj [8]

Answer:

545.2

Explanation:

To read a beam balance, you need to add together the numbers that each balance reads.

The first beam reads 500.

The second beam reads 40.

The third beam reads 5.2.

500 + 40 + 5.2 = 545.2

The total mass of the rock sample is 545.2.

4 0
3 years ago
Grade
Anuta_ua [19.1K]

Answer:

pp

Explanation:

4 0
4 years ago
A water skier is pulled by a net force of 165 N and has an acceleration of 2.2 m/s2. What is the mass of the skier?
TiliK225 [7]
A) 75 kg

Answer^


Explanation:

a = Fnet / m : plug the numbers in

2.2 m/s ^2 = 165n /m : now cross multiple

22m / 165 : now divide 22 to both sides

M = 75

3 0
3 years ago
The following list contains some common polyatomic ions. Using the charge on these ions and the idea of valence, predict the for
Pavlova-9 [17]
The answer is A Because i took fhe test
3 0
3 years ago
The hydrochloride form of cocaine has a solubility of 1.00 g in 0.400 mL water. Calculate the molarity of a saturated solution o
Tanya [424]

Answer:

The molarity of the solution is 7.4 mol/L

Explanation:

From the question above

0.400 ml of water contains 1.00 g of hydrochloride form of cocaine

Therefore 1000 ml of water will contain x g of hydrochloride form of cocaine

                    x = 1000 / 0.400

                    x = 2500 g

2500g of hydrochloride form of cocaine is present in 1000 ml of water.

Mole of hydrochloride form of cocaine = mass /molar mass of hydrochloride

Mole of hydrochloride form of cocaine = 2500/339.8

                                                                = 7.4 mol

Molarity = mol/ volume in liter (L)

molarity = 7.4 /1

Molarity = 7.4 mol/L

6 0
3 years ago
Read 2 more answers
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