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3 years ago

According to the diagram below, a bacterial cell does not contain

Chemistry

1 answer:

Pavlova-9 [17]3 years ago

3 0

Answer:

nucleus

Explanation:

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How many moles are in 2.8 x 1023 BS3 molecules?

stiks02 [169]

Answer:

The atomic mass given on a periodic table that is given in grams is the mass of one mole (6.022 × 1023 particles) of that element. EXAMPLE: As you can see from the example above, one mole of Carbon would have a mass of 12.011 grams.

6 0

3 years ago

At a particular temperature a 2.00-L flask at equilibrium contains 2.80 ✕ 10-4 mol N2, 2.50 ✕ 10-5 mol O2, and 2.00 ✕ 10-2 mol N

zhenek [66]

Answer : The value of equilibrium constant (K) is, $5.71\times 10^4$

Explanation :

First we have to calculate the concentration of $N_2,O_2\text{ and }N_2O$

$\text{Concentration of }N_2=\frac{\text{Moles of }N_2}{\text{Volume of solution}}=\frac{2.80\times 10^{-4}mol}{2.00L}=1.4\times 10^{-4}M$

and,

$\text{Concentration of }O_2=\frac{\text{Moles of }O_2}{\text{Volume of solution}}=\frac{2.50\times 10^{-5}mol}{2.00L}=1.25\times 10^{-5}M$

and,

$\text{Concentration of }N_2O=\frac{\text{Moles of }N_2O}{\text{Volume of solution}}=\frac{2.00\times 10^{-2}mol}{2.00L}=1.00\times 10^{-2}M$

Now we have to calculate the value of equilibrium constant (K).

The given chemical reaction is:

$N_2(g)+O_2(g)\rightarrow 2N_2O(g)$

The expression for equilibrium constant is:

$K=\frac{[N_2O]^2}{[N_2][O_2]}$

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

$K=\frac{(1.00\times 10^{-2})^2}{(1.4\times 10^{-4})\times (1.25\times 10^{-5})}$

$K=5.71\times 10^4$

Thus, the value of equilibrium constant (K) is, $5.71\times 10^4$

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4 years ago

How many moles of ions are in 27.5 g of MgCl2?

STatiana [176]

Answer:

0.289 moles of MgCl2

Explanation:

(27.5 g MgCl2) x (1 mol MgCl2 / 95.211 g MgCl2) = 0.289 moles of MgCl2

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2 years ago

Into what protein structure is spider silk found?

snow_tiger [21]

Answer:

Into what protein structure is spider silk found?

= Primary structure

I HOPE IT HELP YOU

4 0

1 year ago

What characteristics of the electron sea model for metallic bonding ?

suter [353]

Answer:

The characteristics of metallic bonds explain a number of the unique properties of metals: Metals are good conductors of electricity because the electrons in the electron sea are free to flow and carry electric current. Metals are ductile and malleable because local bonds can be easily broken and reformed.

Explanation:

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3 years ago