3 years ago

Plz help! This question is due in 10 mins!

Chemistry

1 answer:

Gnom [1K]3 years ago

7 0

Answer: 20

Explanation: I’m in your class.

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How is electronegative related to covalent bonding?

serg [7]

Electronegativity is related to covalent bonding because when two atoms have the same electronegativity bond, they will form a pure covalent bond.

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3 years ago

Read 2 more answers

a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc

ladessa [460]

Answer:

The molarity of the solution is 1.1 $\frac{moles}{liter}$

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$

In this case

number of moles of solute= 0.564 moles
volume= 0.510 L

Replacing:

$molarity=\frac{0.564 moles}{0.510 L}$

Solving:

molarity= 1.1 $\frac{moles}{liter}$

The molarity of the solution is 1.1 $\frac{moles}{liter}$

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3 years ago

4.564000 x 10^-4 express how many significant figures

Vaselesa [24]

Answer: 7

Explanation:

Before a number but after a decimal. The zeros at the end would usually mean that it doesn't count but since the numbers are before the zeros and after a decimal it's 7 sig figs

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3 years ago

You have been asked to draw a Bohr model of the element carbon. How would you arrange the dots that represent electrons?

Dvinal [7]

Answer:

You have been asked to draw a Bohr model of the element carbon. How would you arrange the dots that represent electrons? They would be embedded in a solid core. They would be in rings around the nucleus

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The ratio of x to y is 4 to 12. Fill in numbers to form a table with the given ratio,

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Answer:

Explanation:

x y

4 12

8 24

12 36

16 48

20 60

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3 years ago