All categories

2 years ago

Which statement below best describes how ions are created?

Chemistry

2 answers:

Alisiya [41]2 years ago

7 0

Answer:

<h2>When atoms gain electrons</h2>

rusak2 [61]2 years ago

5 0

$\qquad \qquad \huge \pink {\sf{☁Answer☁}} \\ \\$

When atoms gain or lose electrons.(option A)
Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells

$\rule{70mm}{2.2pt}$

$\sf{\:мѕнαcкεя\: ♪...}$

You might be interested in

The following data was collected for the formation of ammonia (NH3) based on the following overall reaction: N2 + 3H2 = 2NH3 N2

notsponge [240]

Answer : The unit for the rate constant in the rate law for the formation of ammonia is, $M^{-2}min^{-1}$

Explanation :

Rate law is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

For the given chemical equation:

$N_2+3H_2\rightarrow 2NH_3$

Rate law expression for the reaction:

$\text{Rate}=k[N_2]^a[H_2]^b$

where,

a = order with respect to $N_2$

b = order with respect to $H_2$

Expression for rate law for first observation:

$0.0021=k(0.10)^a(0.10)^b$ ....(1)

Expression for rate law for second observation:

$0.0084=k(0.10)^a(0.20)^b$ ....(2)

Expression for rate law for third observation:

$0.0672=k(0.20)^a(0.40)^b$ ....(3)

Dividing 2 by 1, we get:

$\frac{0.0084}{0.0021}=\frac{k(0.10)^a(0.20)^b}{k(0.10)^a(0.10)^b}\\\\4=2^b\\b=2$

Dividing 3 by 1 and also put value of b, we get:

$\frac{0.0672}{0.0021}=\frac{k(0.20)^a(0.40)^2}{k(0.10)^a(0.10)^2}\\\\2=2^a\\a=1$

Thus, the rate law becomes:

$\text{Rate}=k[N_2]^a[H_2]^b$

$\text{Rate}=k[N_2]^1[H_2]^2$

Now, calculating the value of 'k' by using any expression.

$0.0021=k(0.10)^1(0.10)^2$

$k=2.1M^{-2}min^{-1}$

The value of the rate constant 'k' for this reaction is $2.1M^{-2}min^{-1}$

That means, the unit for the rate constant in the rate law for the formation of ammonia is, $M^{-2}min^{-1}$

7 0

4 years ago

Why does one beach have purple sand and another beach have pink sand?

Gnesinka [82]

Ok so I’m going to break it up so it’s a bit easier to read through:

The colours are from the different rocks and minerals that make up the sand.

The little fragments of rock come from for example surrounding mountains.

It could also because sand is simply the product from erosion of the rocks rubbing each other under the action of the waves.

So if the bottom of the ocean is made of black lava for example in Hawaii, there’s a good chance of the sand being black.

In California, the sand usually looks white because it has minerals like quartz and pieces of shell that are made of calcium carbonate.

Hope this helps :)

5 0

3 years ago

Please help me out with this assignment

liberstina [14]

Answer:

1. 7 meters

2. gullet

4. Not sure about this

6. strong

7. digestive

8. starch

12. Not sure about this either

14. Water

15. Jejunum

19. teeth

Hope this helps!

8 0

4 years ago

How many moles of nitrogen, N, are in 76.0 g of nitrous oxide, N2O?

guapka [62]

If the balanced equation reads:

2N2 + O2 ———> 2N2O

You should have 1.72 moles of N2.

8 0

3 years ago

Read 2 more answers

How much energy is generated from freezing 2.5 g water

zvonat [6]

200 calories.
Explanation:
The (latent) heat of fusion of a material, is either one of:
1) the heat required to melt the material without
temperature change or
2) the heat removed from the material to freeze it
without temperature change.
For water this latent heat is 80 cal/g. Multiply this by
2.5 g to get 200 cal.

6 0

3 years ago