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3 years ago

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 features form when rocks bend?

bezimeni [28]

When the sedimentary layers of rocks are soft and under pressure they can be bent into curved structures called geosynclines. One theory is that heat partially melts the sedimentary layers of rocks allowing them to be bent into the curved shapes.

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3 years ago

What is a human event that can cause an increase in freshwater algae growth ? Please help

coldgirl [10]

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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]

Density = mass / volume

1.5 = m / 50.0

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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