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3 years ago

How are magnification and resolutions different

1 answer:

4 0

Magnification is the ability to make small objects seem larger, such as making a microscopic organism visible. Resolution is the ability to distinguish two objects from each other.

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Sodium hydrogen carbonate and citric acid Word equation

timofeeve [1]

Answer:

the right answer is:

Explanation:

How to Balance: NaHCO3 + HC2H3O2 = NaC2H3O2 + CO2 + H2O|

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3 years ago

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Balance the equation Al 2 O 3 + Cl 2 + C ----> AlCl 3 + CO

Anna71 [15]

Answer:

Al2O3 + 3Cl2 + 3 C → 2 AlCl3 + 3 CO

Explanation:

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3 years ago

What is the percent composition of Ba(OH)2?

Alex17521 [72]

Element Symbol Atomic Mass
Barium Ba 137.327
Hydrogen H 1.00794
Oxygen O 15.9994

Hope this helps, good luck

3 0

3 years ago

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At a certain temperature the equilibrium constant, Kc, equals 0.11 for the reaction:

Butoxors [25]

Answer: The equilibrium concentration of ICl is 0.27 M

Explanation:

We are given:

Initial moles of iodine gas = 0.45 moles

Initial moles of chlorine gas = 0.45 moles

Volume of the flask = 2.0 L

The molarity is calculated by using the equation:

$\text{Molarity}=\frac{\text{Number of moles}}{\text{Volume}}$

Initial concentration of iodine gas = $\frac{0.45}{2}=0.225M$

Initial concentration of chlorine gas = $\frac{0.45}{2}=0.225M$

For the given chemical equation:

$2ICl(g)\rightarrow I_2(g)+Cl_2(g);K_c=0.11$

As, the initial moles of iodine and chlorine are given. So, the reaction will proceed backwards.

The chemical equation becomes:

$I_2(g)+Cl_2(g)\rightarrow 2ICl(g);K_c=\frac{1}{0.11}=9.091$

Initial: 0.225 0.225

At eqllm: 0.225-x 0.225-x 2x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[ICl]^2}{[Cl_2][I_2]}$

Putting values in above equation, we get:

$9.091=\frac{(2x)^2}{(0.225-x)\times (0.225-x)}\\\\x=0.135,0.668$

Neglecting the value of x = 0.668 because equilibrium concentration cannot be greater than the initial concentration

So, equilibrium concentration of ICl = 2x = (2 × 0.135) = 0.27 M

Hence, the equilibrium concentration of ICl is 0.27 M

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3 years ago

In the periodic table, group 15 all have _____ valence electrons. 2 4 5 6

maxonik [38]

5 valence electrons

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3 years ago

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