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e-lub [12.9K]
3 years ago
15

Please help me I will give you the brain thing with extra points if you help me, please. I need to get this right. 8/10

Chemistry
2 answers:
Wewaii [24]3 years ago
8 0

Answer:

40 km

Explanation:

I learned this in the 8th grade..

<3

8_murik_8 [283]3 years ago
5 0

Answer:

C) 40km/hr

Explanation:

1 hour= 60 min

30 times 2= 60

20 times 2=40

40km/60 min

40km/hr

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Water interacts with polar substances like –OH groups but not with non-polar substances like methyl (-CH3) or ethyl groups (-CH2
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To answer this, we look at the polarities of these molecules given. A molecule is said to be polar when there is an unequal shraing of electrons the opposite is called nonpolar.
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3 0
3 years ago
Which example best describes a double displacement reaction?
Inessa05 [86]

Answer:

The first one would describe it best

Explanation:

The second option sounds like a single displacement reaction

The third is a decomposition reaction

ANd the first is a combination reaction

6 0
4 years ago
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How does litmus indicator work​
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3 years ago
HELPPP!!! What is the volume of a 1.31 moles sample of gas if the pressure is 904 mmHg and the temperature is 37. degrees Celsiu
Tju [1.3M]

Answer:

27.99 dm³

Explanation:

Applying

PV = nRT................ Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

From the question, we were aksed to find V.

Therefore we make V the subject of the equation

V = nRT/P................ Equation 2

Given: n = 1.31 moles, T = 37°C = 310K, P = 904 mmHg = (904×0.001316) = 1.1897 atm

Constant: R = 0.082 atm.dm³/K.mol

Substitute these values into equation 2

V = (1.31×310×0.082)/(1.1897)

V = 27.99 dm³

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How many atoms are in one molecule of baking soda, NaHCO3?
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