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3 years ago

Cells are differentiated when

Chemistry

1 answer:

Serjik [45]3 years ago

4 0

Answer:

D I think.............

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PLEASE HELP!!! URGENT!!! WILL GIVE BRAINLIEST

Kisachek [45]

Answer:

A silicone atom shares an electron pair with each oxygen atom

Explanation:

Because the silicone dioxide molecule has one silicone atom:two oxygen atoms....

Hence...since silicone has four electrons in the outter shell..which are used for bonding...each oxygen atom shares two electrons(an electron pair) with the silicone atom...so as to fill the outter shell of the oxygen atom

8 0

4 years ago

Read 2 more answers

2. How have observations of the natural world helped<br> in the development of calendars?

nekit [7.7K]

Answer:

just wanted points

Explanation:

i wasted your time srry

7 0

3 years ago

If 1.0 M HIM HI is placed into a closed container and the reaction is allowed to reach equilibrium at 25∘C∘C, what is the equili

sattari [20]

The given question is incomplete. The complete question is

If 1.0 M HI is placed into a closed container and the reaction is allowed to reach equilibrium at 25∘C∘C, what is the equilibrium concentration of H2 (g). Given the equilibrium constant is 62.

Answer: The equilibrium concentration of $H_2$ is 0.498 M

Explanation:

Initial concentration of $HI$ = 1.0 M

The given balanced equilibrium reaction is,

$2HI(g)\rightarrow H_2(g)+I_2(g)$

initial (1.0) M 0 0

At eqm (1.0-2x) M (x) M (x) M

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[H_2]\times [I_2]}{[HI]^2}$

Now put all the given values in this expression, we get :

$62=\frac{(x)^2}{1.0-2x}$

By solving we get :

$x=0.498M$

Thus the equilibrium concentration of $H_2$ is 0.498 M

6 0

3 years ago

Janice looked out the window. Her yard still had snow on it. Snow on the yard across the street had melted. Why did Janice’s yar

atroni [7]

Janice’s yard was probably not exposed to as much sun and heat as the yard across the street

4 0

4 years ago

Read 2 more answers

When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed?

SashulF [63]

The balanced chemical reaction for this would be written as:

2Mg + O2 = 2MgO

We use this reaction and the amount of the reactant given to calculate for the amount of magnesium oxide that is produced. We do as follows:

1.5 g Mg (1 mol / 24.31 g) ( 2 mol MgO / 2 mol Mg ) (40.30 g /1 mol ) = 2.49 g MgO produced

6 0

3 years ago