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Setler79 [48]
2 years ago
12

Where do properties of matter come from?

Chemistry
1 answer:
Korolek [52]2 years ago
8 0

Answer:

Extensive or inextinsive and either physical or chemical

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What is the mass of a neutron?<br> A) 1/2,000 amu<br> B) 1 amu<br> C) 2,000 amu<br> D) 1/200 amu
tatyana61 [14]

Answer:

B) 1 amu

Explanation:

4 0
3 years ago
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Why was it important to let the solution cool down before conducting the titration experiment?
Papessa [141]

Answer:

The pH range, reaction rate, accuracy and solubility are affected by the temperature.

Explanation:

Hello,

Temperature is factor affecting how solutions behave, thus, it could modify the pH range (change in color values) for an indicator in the presence of a base or an acid, since the kinetics behind the change of color is modified maybe decreasing or increasing the aforesaid range. Next, temperature usually increases the reaction rate, that's why the change in color could become faster or out of the proper change range. Then, in titration we use temperature-sensitive glassware which could expand due to high temperatures and subsequently turning out into wrong measurements. Finally, solubility is affected by the temperature, since the molecules are allowed to interact more effectively, that's we must make sure that they're completely dissolved at room temperature while titrating.

Best regards.

6 0
4 years ago
It is found that 250 ml of gas at stp has a mass of .675 g what is the molar mass
katrin2010 [14]

Answer:

61.3 g/mol  

Step-by-step explanation:

We can use the <em>Ideal Gas Law</em> to solve this problem:

       pV = nRT

Since n = m/M, the equation becomes

       pV = (m/M)RT     Multiply each side by M

    pVM = RT              Divide each side by RT

         M = (mRT)/(pV)

<em>Data: </em>

m = 0.675 g

R = 0.0.083 14 bar·L·K⁻¹mol⁻¹

T = 0 °C = 273.15 K

p = 1 bar

V = 250 mL = 0.250 L

<em>Calculation: </em>

M= (0.675 × 0.083 14 × 273.15)/(1 × 0.250)

M= 15.33/0.250

M= 61.3 g/mol

4 0
3 years ago
In a machine shop, two cams are produced, one of aluminum and one of iron. Both cams have the same mass. Which cam is larger? (a
Lelu [443]
The best and most correct answer among the choices provided by your question is the second choice or letter B.

The iron cam is larger than the aluminum cam even if with the same size.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
4 years ago
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What is the molecular formula of a compound with a molecular mass of 63.0g and an empirical formula of CH3O
gladu [14]

Answer:

I think first molar mass of ch3o which is 31

Explanation:

6 0
3 years ago
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