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julia-pushkina [17]
2 years ago
13

Which rate describes a unit price?

Chemistry
2 answers:
BARSIC [14]2 years ago
4 0

Answer:

A.

Explanation:

Aleksandr-060686 [28]2 years ago
4 0
A because 1.00 is a unit rate, so the unit price would therefor be 1.00 is equal to 2 lemons!
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What is the molarity of a solution of 17.0 g of nh4br in enough h2o to make 158 ml of solution? answer in units of m?
vivado [14]
Unit of M is also mole/L, where mole is the moles of solute and L is the volume of the solution.  The latter is given: 158 mL or 0.158 L.  So we need to find out the moles of NH4Br.

Moles of NH4Br = Mass of NH4Br/molar mass of NH4Br = 17.0g/(14+1*4+79.9)g/mol = 0.1736 mole.

So, the molarity of the solution = 0.1736mole/0.158L = 1.10 mole/L = 1.10 M
6 0
3 years ago
2.5 moles of sodium chloride is dissolved to make 0.050 liters of solution
Hitman42 [59]

The answer is:

the molarity = 50 moles/liters

The explanation:

when the molarity is = the number of moles / volume per liters.

and when the number of moles =2.5 moles

and the volume per liters = 0.05 L

so by substitution:

the molarity = 2.5moles/0.05L

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7 0
2 years ago
What is the formula for the compound formed by calcium ions and chloride ions? (1) CaCl (2) CaCl2 (3) CaCl3 (4) Ca2Cl
amid [387]
I think it would be c
6 0
3 years ago
ASAP will give brainliest!!!!
Andru [333]

Answer:

1

Explanation:

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electronic configuration: 2,7

so it needs 1 electron to stabilise

that's why 1 covalent bond

hope it helps!!

7 0
3 years ago
15.How can a pure sample of barium sulphate be otained from barium carbonate?
yan [13]

Answer:

Barium carbonate powder is stirred add pulp in the entry, the vitriol that the adds solubility then reaction that makes the transition is filtered and is obtained the barium sulfate filter cake and liquid after the transition.

8 0
2 years ago
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