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Karo-lina-s [1.5K]
3 years ago
9

What are some examples of properties scientists use to describe matter?

Chemistry
2 answers:
AveGali [126]3 years ago
4 0

Answer:

Physical properties are used to observe and describe matter. Physical properties can be observed or measured without changing the composition of matter. These are properties such as mass, weight, volume, and density.

drek231 [11]3 years ago
4 0

Answer:

they use there senses.. touch, smell, they also use there eyes

Explanation:

scientist are VERY smart people.. not neards but smart people

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Which of the following is NOT a characteristic of a strong acid?
juin [17]

Answer:

a and c

Explanation:

4 0
3 years ago
What is the mass (in grams) of 6.78 moles of dinitrogen pentoxide
WINSTONCH [101]
<h2>Hello!</h2>

The answer is:

There are 732.24 grams of Dinitrogen Pentoxide  N_{2}O_{5} in 6.78 moles of the same compound.

<h2>Why?</h2>

The dinitrogen pentoxide, or nitrogen pentoxide, is a rare salt that consists of anion and cations, and it's an important compound when preparing some kinds of explosives.

So, to answer the question, first,  need to look for the molecular formula of the dinitrogen pentoxide, then, use it to calculate the mass in gram of 6.78 moles of the same compound.

The dinitrogen pentoxide formula is:

N_{2}O_{5}

Where, the molar mass of each element are:

N=\frac{14g}{mol}

O=\frac{16g}{mol}

Calculating the molar mass  of the compound, we have:

N_{2}O_{5}=2*(\frac{14g}{mol})+5*(\frac{16g}{mol})

N_{2}O_{5}=(\frac{28g}{mol})+(\frac{80g}{mol})=(\frac{108g}{mol}

Now, calculating what is the mass of 6.78 of N_{2}O_{5}, we have:

mass=moles*MolarMass=6.78mol(N_{2}O_{5})*\frac{108g}{mol}=732.24g(N_{2}O_{5})

So, there are 732.24 grams of Dinitrogen Pentoxide  N_{2}O_{5} in 6.78 moles of the same compound.

Have a nice day!

3 0
4 years ago
Which element is classified as a noble gas?
Fed [463]

Answer:

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og)

Explanation:

I found my answer on google

i hope it helps

please mark me as brainliest

6 0
3 years ago
Consider the acid-catalyzed hydration of 3-methyl-1-butene. For each of the four steps, add one or two curved arrows to the reac
UkoKoshka [18]

Answer:

This addition follows MarkowniKov's rule

Explanation:

The image attached shows the mechanism of the reaction. It can easily be seen that a secondary carbocation is formed leading to the alkanol. The image simplifies the mechanism which involves the initial addition of the hydroxide followed by the hydrogen ion.

5 0
4 years ago
Which is the best example and explanation that a physical change has occurred?
oee [108]

dicing potatoes, because the molecules are separated but remain the same substance

4 0
3 years ago
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