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3 years ago

Which question is the best scientific question?

1 answer:

6 0

Answer: What does a duck eat most often?

Option D is the best scientific question

Hope it helps....

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If 20 grams of sulfur reacts with 30 grams of oxygen, predict the mass of sulfur trioxide produced. Why would you expect this

Scilla [17]

20/32=0.625 moles of sulfur
30/16 = 1.875 moles of oxygen
The formula requires 1 mole of sulfur for 3 moles of oxygen which means that their is no limiting reactant as that is the ratio found thus it will react to completion forming 50 grams of product or sulfur trioxide

4 0

3 years ago

The reactant side of a balanced chemical equation is shown below.

Sloan [31]

Answer:

Explanation:

In the equation, Cl is chlorine and there is a number "2" so that the correct answer is 2.

6 0

3 years ago

Read 2 more answers

Climate changes cause a drought. There is no food to collect. To survive, the animals must become predators, catch and kill prey

o-na [289]

I think the answer you are looking for is D.

Hope this helps!!! :D

8 0

3 years ago

Read 2 more answers

At 2000 ∘C the equilibrium constant for the reaction 2NO(g)⇌N2(g)+O2(g) is Kc=2.4×103. If the initial concentration of NO is 0.1

Rasek [7]

Answer:

$[N_2]=0.0866M$

Explanation:

Hello there!

In this case, in agreement to the chemical reaction, it is possible for us to figure out the equilibrium concentration of the N2 product, via an ICE table plugged in the equilibrium expression:

$Kc=\frac{[N_2][O_2]}{[NO]^2}\\\\2.4x10^3=\frac{x*x}{(0.175-2x)^2}$

In such a way, when solving for x via quadratic equation or just a solver, it is possible to obtain:

$x_1=0.0866M\\\\x_2=0.0884M$

In such a way, since the root 0.0884 M produce a negative concentration of NO (0.175-2*0.0884=-0.0018M), we infer that the correct root is 0.0866 M; therefore, the concentration of N2 at equilibrium is equal to x:

$[N_2]=x=0.0866M$

Best regards!

4 0

3 years ago

Luca made the following chart for Earth’s four basic movements. What needs to be correct on his chart

amid [387]

Answer:

The solar system speed and Milky Way speed should be switched

Explanation:

4 0

3 years ago