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4 years ago

What element is likely to form an ionic compound with chlorine?

Chemistry

1 answer:

kirill [66]4 years ago

5 0

Sodium (NA)
the sodium atom is donating its 1 valence electron to the chlorine atom. This creates a sodium cation and a chlorine anion. Notice that the net charge of the resulting compound is 0.

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Scientists have discovered a new planet with many craters. Which of the following would be an appropriate hypothesis?

AnnZ [28]

Indicates that the planet does not have an atmosphere. If the planet had an atmosphere is would erode away at the meteors before they hit the surface.

8 0

4 years ago

One of the waste byproducts of a nuclear reactor using uranium-235 is strontium-90 with half-life of about 28 years. If we have

e-lub [12.9K]

Answer:

(a) 140 years

(b) 3.125 pounds

Explanation:

QuestIons

(a) How long is five half-life

(b) How much radioactive strontium is left after five half-life

Given that:

Half-life is about 28 years; &

There are 100 pounds of this radioactive waste

Five half-life will be;

= 28 × 5

= 140 years

The amount of radioactive remaining after five half-life is:

$= 100 \times( \dfrac{1}{2}) ^5$

= 100 × 0.03125

= 3.125 pounds

5 0

3 years ago

Even at high T, the formation of NO is not favored:

Readme [11.4K]

Answer:

3,16x10⁻³M

Explanation:

For the reaction:

N₂(g) + O₂(g) ⇄ 2NO(g). The kc is defined as:

kc = [NO]² / [N₂] [O₂] = 4,10x10⁻⁴ (1)

If you add in a 1,0L container 0,25 mol of N₂ and 0,10 mol of O₂, concentrations in equilibrium will be:

[N₂] = 0,25M - x

[O₂] = 0,10M - x

[NO] = 2x

Replacing in (1):

[2X]² / [0,25-x] [0,10-x] = 4,10x10⁻⁴

[2X]² / 0,025 - 0,35x + x²= 4,10x10⁻⁴

4X² = 4,10x10⁻⁴x² - 1,435x10⁻⁴x + 1,025x10⁻⁵

3,99959x² + 1,435x10⁻⁴x - 1,025x10⁻⁵ = 0

Solving for x:

x = -0,0016 (Wrong answer, there is no negative concentrations)

x = 0,00158 (Right answer)

As molar concentration of NO in equilibrium is 2x:

[NO] = 2x = 2×0,00158 = 3,16x10⁻³M

I hope it helps!

6 0

4 years ago

Which pair of atoms is most likely to be covalently bonded?

cricket20 [7]

1)Na and O - ion bond
2)K and F - ion bond
3)Ne and O - no bond (as Ne is a noble gas)
And by elimination, your answer is 4)

8 0

4 years ago

Read 2 more answers

The energy transformation in an electromagnetic is from chemical to electrical to electromagnetic waves.

8_murik_8 [283]

True I think but I could be wrong

7 0

3 years ago

Read 2 more answers