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adoni [48]
3 years ago
15

What does a straight line represent on a distance vs time graph?

Chemistry
2 answers:
bija089 [108]3 years ago
4 0

Answer:

It represents the relationship between the distance travelled and time spent as constant or at a stop.

Explanation:

This is because as the line progresses, the time increases the distance should change as well my moving up or down, in a linear equation this relationship is constand but if the line is horizontal though, the distance is not changing despite time passing which means it has come to a stop.

stellarik [79]3 years ago
3 0
A straight line on a distance va time graph represents constant speed
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Wich are the disadvantages of skimming oil spills?
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What pH does an acid have?
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Answer:

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Explanation:

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3 years ago
The combustion of 135 mg of a hydrocarbon produces 440 mg of CO2 and 135 mg H2O. The molar mass of the hydrocarbon is 270 g/mol.
NeX [460]

Answer:

Molecular formula = C20H30

Explanation:

NB 440mg = 0.44g, 135mg= 0.135g

From the question, moles of CO2= 0.44/44= 0.01mol

Since 1 mol of CO2 contains 1mol of C, it implies mol of C = 0.01

Also from the question, moles of H2O = 0.135/18= 0.0075mole

Since 1 mol of H2O contains 2mol of H, it implies mol of H = 0.0075×2= 0.015 mol of H

To get the empirical formula, divide by smallest number of mole

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Mol of H = 0.015/0.01= 1.5

Multiply both by 2 to obtain a whole number

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Empirical formula= C2H3

[C2H3] not = 270

[ (2×12) + 3]n = 270

27n = 270

n=10

Molecular formula= [C2H3]10= C20H30

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3 years ago
What happened to the amplitude from wave A to wave B?
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What would happen if uranium-241 lost 2 protons and 2 neutrons?
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If uranium-241 lost 2 protons and 2 neutrons, then  thorium-237 would be produced. The number beside the element is the mass number which is the sum of protons and neutrons.  If uranium would lose 2 protons and 2 neutrons, then the mass number would decrease by 4 making it 237. Looking in a periodic table, thorium is the element which has a mass number of 237.
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