3 years ago

Which TWO of the elements listed below would most like form a covalent bond?

Chemistry

1 answer:

hodyreva [135]3 years ago

7 0

Oxygen and Hydrogen forms a single covalent bond

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In an experiment Teresa's measures 15.5 mL of water she must have used a

kotykmax [81]

Answer:

transfer pipet that had markings every 0.1 mL.

Explanation:

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4 years ago

how much energy has your body used, in joules, if your health device indicates that 450 calories were burned during your workout

Likurg_2 [28]

Answer:

Total energy consumed = 1,882.8 joules

Explanation:

Given:

Calories burned = 450 calories

Find:

Total energy consumed

Computation:

1 calorie = 4.184 joules

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450 calories = 4.184 × 450

450 calories = 1,882.8 joules

Total energy consumed = 1,882.8 joules

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3 years ago

If the density of carbon tetrachloride is 0.893 g/mL, and a sample has a volume of 9.29 mL, what is the mass?

NNADVOKAT [17]

Answer:

8.3g

Explanation:

d=m/v

m=d*v

m=0.893*9.29

m=8.3g

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3 years ago

When the temperature of a sample of pure water is raised above 25 °C,(1)the hydronium ion concentration will be greater than the

Ludmilka [50]

Answer:

The correct answer is option 3.

Explanation:

$H_2O\rightleftharpoons H^++OH^-$

The expression of $K_w$ is given by :

$K_w=[H^+][OH^-]$

$K_w\propto [H^+]$

$K_w\propto [OH^-]$

Rise in temperature will result in more dissociation of water molecules into hydrogen ions and hydroxide ions.

With an increase in concentration of hydrogen ions and hydroxide ions value of $K_w$ will also increase.

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4 years ago

Can I get some help

horrorfan [7]

Answer:

I'm afraid not, the image is too blurry

8 0

3 years ago

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