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Naddika [18.5K]
4 years ago
12

What do you think happens when paleontologists find only partial remains?

Chemistry
1 answer:
Jobisdone [24]4 years ago
8 0

Answer:

To study the organism.

Explanation:

When paleontologists find only partial remains of some organism so they study it in order to find the characteristic of the organism and find out the history of earth. paleontologists are the scientists who study fossils of plants and animals to study the history of earth so we can say that paleontologists study the partial remains in order to study the history of earth.

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Which determines the state of matter for any material?
Paul [167]

Answer: the answer is A and C

Explanation: because they are really kind of both the same

8 0
4 years ago
A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g).
katen-ka-za [31]

Answer:

Ratio of Vrms of argon to Vrms of hydrogen = 0.316 : 1

Explanation:

The root-mean-square speed measures the average speed of particles in a gas, and is given by the following formula:  

Vrms = \sqrt{3RT/M}

where R is molar gas constant = 8.3145 J/K.mol, T is temperature in kelvin, M is molar mass of gas in Kg/mol

For argon, M = 40/1000 Kg/mol = 0.04 Kg/mol, T = 4T , R = R

Vrms = √(3 * R *4T)/0.04 = √300RT

For hydrogen; M = 1/1000 Kg/mol = 0.001 Kg/mol, T = T, R = R

Vrms = √(3 * R *T)/0.001 = √3000RT

Ratio of Vrms of argon to that of hydrogen = √300RT / √3000RT = 0.316

Ratio of Vrms of argon to that of hydrogen = 0.316 : 1

4 0
4 years ago
How can you tell if a sample contains baking soda and cornstarch or baking powder
densk [106]

You could mix it with some vinegar, if it has cornstarch or baking soda in it will bubble, I'm not sure how to tell with baking powder... I'm not sure if it would have a reaction or not.

Hope this helps.

7 0
3 years ago
If I mixed milk and vinegar together would it be a chemical or physical change?
IrinaVladis [17]

Answer:

A chemical change

Explanation:

3 0
3 years ago
Read 2 more answers
What is the balanced form fir Na(s) + ao2(g) = Na2O(s)​
Dima020 [189]

Answer:

Balanced Chemical equation:

4Na + O₂ → 2Na₂O

Explanation:

Chemical equation:

Na + O₂ → Na₂O

Balanced Chemical equation:

4Na + O₂ → 2Na₂O

Four mole of sodium combine with one mole of oxygen and form two mole of sodium oxide.

Coefficient with reactant and products:

Na   4

O₂     1

Na₂O  2

Oxygen is present in group sixteen and have six valance electrons. while sodium is alkali metal and present in group one and have one valance electron.

Oxygen needs two electron to complete the octet while sodium need to lose the one electron to get the complete octet.

When oxygen is combine with sodium it gain its two valance electrons from two sodium atom and form anion while sodium loses its valance electron to wards oxygen and form cation. The bond form between them is ionic because one is metal and other is non metal and electrons are completely transfer from two sodium atom to one oxygen atom.

6 0
3 years ago
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