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4 years ago

What is Au periodic Table

Chemistry

2 answers:

True [87]4 years ago

7 0

Au is the atomic symbol for Gold on the periodic table.

Natasha2012 [34]4 years ago

6 0

Au is Anglo-Saxon.

Also known as Gold.

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Which is the least viscous? A C20H42 B. CCL4 C. CH3OH D. CHCI3 E. C6H6

velikii [3]

C. CH3OH
hope this helped! :))

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3 years ago

A beaker cost 8.40$and Harry drops 3 dozen beakers. How much will Harry's chemistry teacher charge

tatyana61 [14]

Answer:

302.40

Explanation:

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4 years ago

Consider the following reaction at a high temperature. Br2(g) ⇆ 2Br(g) When 1.35 moles of Br2 are put in a 0.780−L flask, 3.60 p

UNO [17]

Answer : The equilibrium constant $K_c$ for the reaction is, 0.1133

Explanation :

First we have to calculate the concentration of $Br_2$ .

$\text{Concentration of }Br_2=\frac{\text{Moles of }Br_2}{\text{Volume of solution}}$

$\text{Concentration of }Br_2=\frac{1.35moles}{0.780L}=1.731M$

Now we have to calculate the dissociated concentration of $Br_2$ .

The balanced equilibrium reaction is,

$Br_2(g)\rightleftharpoons 2Br(aq)$

Initial conc. 1.731 M 0

At eqm. conc. (1.731-x) (2x) M

As we are given,

The percent of dissociation of $Br_2$ = $\alpha$ = 1.2 %

So, the dissociate concentration of $Br_2$ = $C\alpha=1.731M\times \frac{1.2}{100}=0.2077M$

The value of x = 0.2077 M

Now we have to calculate the concentration of $Br_2\text{ and }Br$ at equilibrium.

Concentration of $Br_2$ = 1.731 - x = 1.731 - 0.2077 = 1.5233 M

Concentration of $Br$ = 2x = 2 × 0.2077 = 0.4154 M

Now we have to calculate the equilibrium constant for the reaction.

The expression of equilibrium constant for the reaction will be :

$K_c=\frac{[Br]^2}{[Br_2]}$

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

$K_c=\frac{(0.4154)^2}{1.5233}=0.1133$

Therefore, the equilibrium constant $K_c$ for the reaction is, 0.1133

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3 years ago

The diagram shows two samples of gas enclosed in identical containers. Each colored ball represents a gas particle. Both samples

Natali5045456 [20]

Answer:

Sample B

Explanation:

When heat is added to a substance, the molecules and atoms vibrate faster. Since the speed for Sample B is higher this means it has a higher temperature as well.

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3 years ago

Read 2 more answers

Zn + 2HCl -----> ZnCl2 + H2 what mass of ZnCl2 will be produced if 25g of Hcl react

labwork [276]

What? It would be nice if you show pic

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3 years ago