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kolbaska11 [484]
3 years ago
15

when air molecules collide with things around us, it produces _______ (2 words), which is measured with a _______.​

Chemistry
1 answer:
pogonyaev3 years ago
4 0
<h2>Answer:</h2><h3><u>QUESTION ①)</u></h3>

✔ When air molecules collide with things around us, it produces pressing force , which is measured with a Pressure gauge.

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A student performs an experiment similar to what you will be doing in lab, except using titanium metal instead of magnesium meta
Genrish500 [490]

Answer:

n = 0.0022 mol

Explanation:

Moles is denoted by given mass divided by the molar mass ,  

Hence ,  

n = w / m  

n = moles ,  

w = given mass ,  

m = molar mass .  

From the information of the question ,

w = 0.108 g

As we known ,

The molar mass of titanium = 47.867 g / mol

The mole of titanium can be caused by using the above relation , i.e. ,

n = w / m  

n = 0.108 g / 47.867 g / mol

n = 0.0022 mol

7 0
4 years ago
How many moles of solute are contained in a 250.0-milliliter solution that has a concentration of 0.85 M?
adoni [48]

Answer : The correct option is, 0.21 moles

Solution : Given,

Molarity of the solution = 0.85 M = 0.85 mole/L

Volume of solution = 250 ml = 0.25 L     (1L=1000ml)

Molarity : It is defined as the number of moles of solute present in one liter of the solution.

Formula used :

Molarity=\frac{\text{moles of solute}}{\text{Volume of solution in liters}}

Now put all the given values in this formula, we get the moles of solute of the solution.

0.85mole/L=\frac{\text{moles of solute}}{0.25L}

\text{moles of solute}=0.2125=0.21moles

Therefore, the moles of solute is, 0.21 moles

7 0
3 years ago
Read 2 more answers
Classify each of the reactions listed below as a single-displacement, double-displacement, synthesis,
gayaneshka [121]

Answer:

1) Reaction

3)

4)Single displacement reaction

8 0
3 years ago
Read 2 more answers
Compound X has the formula C8H14.
Kipish [7]

Answer:

Compound X has the formula C8H14.

X reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form a mixture of cis- and trans-1,2-dimethyl cyclohexane. Treatment of X with ozone followed by zinc in aqueous acid gives a ketone plus formaldehyde (CH2=O). What is the structure of X?

Explanation:

The degree of unsaturation in the given molecule C8H14 is:

DU=(Cn+1)-Hn/2-Xn/2+Nn/2

where,

Cn=number of carbon atoms

Hn=number of hydrogen atoms

Xn=number of halogen atoms

Nn=number of nitrogen atoms

C8H14:

DU=(8+1)-14/2

=>DU=9-7 =2

Hence, the given molecule will have either two double bonds or one double bond and one ring or two rings.

X reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form a mixture of cis- and trans-1,2-dimethylcyclohexane.

This indicates that the molecule X has one double bond and one ring that is cyclohexane ring.

Treatment of X with ozone follwed by zinc in aqueous acid gives a ketone plus formaldehyde (CH2=O).

So, the molecule has a ring and double bond CH2.

Based on the given data the structure of compound X is shown below:

The reaction sequence is shown below:

3 0
3 years ago
It takes 560 J of energy to raise the temperature of 130.6 g mercury from 20.0°C to 66.5 °C.
Anestetic [448]

Answer:

0.0922 J/g°C

Explanation:

Use the formula Q=mc(delta)T. My teacher called it "M"cat to help my class remember it. Q-energy(560J) M-mass(130.6g) c(specific heat) is what you are solving for and delta T is the change in temperature(66.5-20.0). Put these values in the formula and solve for c.

5 0
3 years ago
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