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Natasha_Volkova [10]

2 years ago

7

If you throw a basketball to a friend while you are sitting or standing on a skateboard, what will happen to you when you throw

the ball?

2 answers:

Masja [62]2 years ago

6 0

Answer:

You will more than likely fall or get pushed back a little

Explanation:

Vilka [71]2 years ago

4 0

Answer

Depends on if you're good on a skateboard or not.

Explanation:

If you're good: Then you wont fall

If you're bad: Then you might fall

Can't tell if this is an actual school question or not, lol

But I hope it helps, :)

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Which products would form if chlorine gas was bubbled through a solution of sodium bromide

GaryK [48]

I honestly don’t know

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2 years ago

Write the chemical equation of sodium reacts with hydrochloric acid

BartSMP [9]

Answer:

NaOH + HCl → H2O and NaCl.

Explanation:

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2 years ago

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Hydrogen sulfide decomposes according to the following reaction, for which Kc=9.30E-8 at 700 degrees Celsius. 2 H2S(g) --> 2

Svetlanka [38]

Answer: The equilibrium concentration of $H_2(g)$ at 700 degrees Celsius is 0.0012 M

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c
$

Moles of $H_2S$ = 0.29 mole

Volume of solution = 3.0 L

Initial concentration of $H_2S$ = $\frac{0.29mol}{3.0L}=0.097M$

The given balanced equilibrium reaction is,

$2H_2S(g)\rightleftharpoons 2H_2(g)+S_2(g)$

Initial conc. 0.097 M 0M 0M

At eqm. conc. (0.097-2x) M (2x) M (x) M

The expression for $K_c$ is written as:

$K_c=\frac{[H_2]^2\times [S_2]}{[H_2S]^2}$

$K_c=\frac{(2x)^2\times x}{(0.097-2x)^2}$

$9.30\times 10^{-8}=\frac{(2x)^2\times x}{(0.097-2x)^2}$

$x=0.00060$

Equilibrium concentration of $[H_2]$ = 2x= $2\times 0.00060=0.0012M$

6 0

3 years ago

A certain volume of a gas had a pressure of 800 torr at a temperature of -40 degrees C. What was the original volume if the volu

nikitadnepr [17]

Answer : The original volume of gas is $365cm^3$

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 800 torr

$P_2$ = final pressure of gas at STP = 760 torr

$V_1$ = initial volume of gas = ?

$V_2$ = final volume of gas at STP = $450.0cm^3$

$T_1$ = initial temperature of gas = $-40^oC=273+(-40) =233K$

$T_2$ = final temperature of gas at STP = $0^oC=273+0=273K$

Now put all the given values in the above equation, we get:

$\frac{800torr\times V_1}{233K}=\frac{760torr\times 450.0cm^3}{273K}$

$V_1= 364.8cm^3\approx 365cm^3$

Therefore, the original volume of gas is $365cm^3$

8 0

3 years ago

Which is one possible way the digestive system works together with other body system

enot [183]

It works closely with the digestive system in order to absorb + distribute nutrients throughout the body
It also works with circulatory system which carries the chemical signals from the endocrine system (endocrine system is the one that controls the speed of digestion)

4 0

3 years ago