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kogti [31]
3 years ago
15

What does the color and smooth texture of this

Chemistry
2 answers:
Sergeu [11.5K]3 years ago
7 0

Answer:A

Explanation:

It cools rapidly I am contains dark minerals

Pavlova-9 [17]3 years ago
6 0

Answer:

It cools rapidly and contains dark minerals.

Explanation:

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Which structure represents nonane?
goldfiish [28.3K]

Explanation:

i don't understand what you wrote, but nonane is C9H20

7 0
3 years ago
A self-contained living thing
sleet_krkn [62]
The correct answer Organism
3 0
3 years ago
When chlorine is added to acetylene, 1, 1, 2, 2-tetrachloroethane is formed: 2cl2 (g) + c2h2 (g) → c2h4cl4 (l) how many liters o
Otrada [13]
Answer:
             20 L of Cl₂

Solution:

The reaction is as follow,

                                   H₂C₂  +  2 Cl₂     →      H₂C₂Cl₄

According to equation,

       167.84 g (1 mole) H₂C₂Cl₄ is produced by  =  44.8 L (2 mole) of Cl₂
So,
                 75 g of H₂C₂Cl₄ will be produced by  =  X L of Cl₂

Solving for X,
                      X  =  (44.8 L × 75 g) ÷ 167.84 g

                      X  =  20 L of Cl₂
7 0
4 years ago
10g of helium (MM=4.0g/mol) occupies a volume of 73L at a temperature of 233k. calculate the pressure of this gas
Levart [38]
PV = nRT   (where P = pressure; V = volume; n = number of moles; R = gas constant; T = Temperature)
Moles of He = mass of He ÷ molar mass of He                    =  10 g ÷ 4 g/mol                    =  2.5 mol

Now, based on the formula above     P = (nRT) ÷ V
    P = (2.5 mol × (0.082 L · atm/mol · K) × 233 K) ÷  73 L        ≈  0.65 atm
8 0
3 years ago
The density of a pure substance is its mass per unit volume. The density of cresol has been measured to be 1024 g/L . Calculate
Ierofanga [76]

Answer: The mass of 405 ml of cresol is 415 grams

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{volume}

Given : Density of cresol = 1024 g/L

Volume of cresol = 405 ml = 0.405 L   ( 1L=1000ml)

Putting in the values we get:

1024g/L=\frac{mass}{0.405L}

mass=1024g/L\times 0.405L=415g

Thus mass of 405 ml of cresol is 415 grams

3 0
3 years ago
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