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Natasha2012 [34]
3 years ago
12

The sun rotates on it axis once every: 28 hours 120 days 25 days 9 hours

Chemistry
1 answer:
olganol [36]3 years ago
8 0

Answer:

Itś about 27 days so just pick 28!

Explanation:

Hope this helped!

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Why is it important to use standard measurements and units in science
saul85 [17]

Unit' is the word used to describe how something is measured. When researching a question in science, we collect data, interpret it, and share the results with other scientists. A common measurement system allows us to make direct comparisons instead of having to know things like how much a certain animal weighs.

6 0
3 years ago
Convert 550 Hm to mm
muminat

Answer:

55,000,000

Explanation:

550 hectometers [hm] = 55,000,000 millimeters [mm]

6 0
3 years ago
How many moles are in 390g of silver nitrate
Karolina [17]
There are 2.3 moles (because of significant figures)
6 0
3 years ago
Read 2 more answers
Consider a simple reaction in which a reactant AA forms products: A→productsA→products What is the rate law if the reaction is z
levacccp [35]

Answer :

The rate law expression for zero order reaction will be:

Rate=k[A]^0

The rate law expression for first order reaction will be:

Rate=k[A]^1

The rate law expression for second order reaction will be:

Rate=k[A]^2

Zero order reaction : There is no affect on the rate law.

First order reaction : The rate law becomes doubled.

Second order reaction : The rate law becomes quadrupled.

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

The given reaction is:

A\rightarrow Products

The rate law expression for zero order reaction will be:

Rate=k[A]^0

The rate law expression for first order reaction will be:

Rate=k[A]^1

The rate law expression for second order reaction will be:

Rate=k[A]^2

Now we have to determine that if doubling of the concentration of A then the rate of reaction will be:

As we know that the zero order reaction does not depend on the concentration of reactant. So, there is no affect on the rate law.

As we know that the first order reaction depend on the concentration of reactant. So, the rate law becomes doubled.

As we know that the second order reaction depend on the concentration of reactant. So, the rate law becomes quadrupled.

5 0
4 years ago
What is the density(in g/L) of a gas with a molar mass of 32.49g/mol at 2.569atm and 458K?
garri49 [273]

Answer:

2.22~g/L

Explanation:

According to the ideal gas law equation:

pV = nRT

Let's express the number of moles in terms of mass and molar mass:

pV = \frac{m}{M} RT

Let's divide both sides by volume:

p = \frac{m}{MV} RT

Notice that:

\frac{m}{V} = d

So the equation becomes:

p = \frac{dRT}{M}

Expressing density:

d = \frac{pM}{RT}

Substituting the given values:

d = \frac{2.569~atm\cdot 32.49~g/mol}{0.08206~\frac{L~atm}{mol~K}\cdot 458~K} = 2.22~g/L

7 0
4 years ago
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