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dolphi86 [110]
3 years ago
11

Put the following elements in order of decreasing (from largest to smallest) atomic radius: Be, Ba, F, Ca.

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
6 0

Answer:  Ba, Ca, Be, F

Explanation:   Size of atom increases when moving down on same group

and decreases when moving on same period from left to right

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What is a human event that can cause an increase in freshwater algae growth ? Please help
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4 years ago
If the density of chloroform is 1.5 g/cm³, what is the mass of 50.0 cm³ of chloroform?
Marianna [84]
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6 0
4 years ago
Read 2 more answers
Plz help, I will give brainliest.
baherus [9]

Answer: The value of K_c is 2

Explanation:

Moles of  N_2O_4 = 1.0 mole  

Volume of solution = 1.00 L

Initial concentration of N_2O_4 = \frac{1.0mol}{1.00L}=1.0M

Equilibrium concentration of NO_2 = \frac{1.0mol}{1.00L}=1.0M  

The given balanced equilibrium reaction is,

                            N_2O_4(g)\rightleftharpoons 2NO_2(g)

Initial conc.          1.0 M            0 M

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

The expression for equilibrium constant for this reaction will be,

K_c=\frac{[NO_2]^2}{[N_2O_4]}

Given : 2x = 1.0

x= 0.5

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

K_c=\frac{(1.0)^2}{(1.0-0.5)}

K_c=2

Thus the value of K_c is 2

4 0
3 years ago
A 13.58 g sample of a compound contains 8.67 g of iron, Fe, 1.60 g of phosphorus, P, and oxygen, O. Calculate the empirical
antiseptic1488 [7]

Answer:

Fe_3PO_4

Explanation:

To do this, we find the moles of each element. We get around 0.155 moles of Fe, 0.051 moles of P, and 0.206 moles of O. We then divide each one by the smallest one (which is 0.051 moles of P). We then get 3 for Fe, 1 for P, and 4 for O. This correlates to the empirical formula of the compound.

6 0
4 years ago
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