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oksian1 [2.3K]
4 years ago
9

How many calories are there in 32 Calories

Chemistry
1 answer:
Tju [1.3M]4 years ago
8 0

Answer:

32

Explanation:

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3 years ago
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4 0
3 years ago
What volume, in milliliters, of water is needed to make an 8.40 M solution of HCl acid using 180. grams of HCI ?
8_murik_8 [283]

Answer:

0 587 mL

Explanation:

First we convert 180 grams of HCl into moles, using its molar mass:

  • 180 g ÷ 36.46 g/mol = 4.94 mol HCl

Now we can <u>use the number of moles and the given concentration to calculate the required volume</u>, applying the <em>definition of molarity</em>:

  • Molarity = moles / liters
  • Liters = Moles / molarity
  • 4.94 mol / 8.40 M = 0.588 L

Finally we <u>convert liters into milliliters</u>:

  • 0.588 L * 1000 = 588 mL

The closest answer is option C, 587 mL.

7 0
3 years ago
If an atom loses two electrons what charge will it have ? <br><br> +2 <br> -1<br> +1<br> -2
Citrus2011 [14]

Answer:

+2

Explanation:

Because an electron has a negative charge.

6 0
4 years ago
Which type of relationship exists between Alaskan brown bears and salmon? A. predation B. mutualism C. competition D. commensali
aksik [14]

Answer:

A. predation.

Explanation:

Predation is a type of ecological interaction in which one organism which is known as predator feeds upon another organism thereby killing it. The organism which is killed by predator is known as prey. In such interaction one organism is benefited while another one is harmed.

Brown bears of Alaska feed upon salmon. In order to so they have developed many ways which include waiting at the bottom of falls from where salmons pass by or standing at the bottom of the falls.

3 0
3 years ago
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