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ss7ja [257]
3 years ago
10

How is friction a good thing and a bad thing?

Chemistry
1 answer:
Alenkinab [10]3 years ago
6 0
1. It stops objects from sliding endlessly.
2. It's the reason why we're able to walk

Bad:
1. Decreases efficiency since some energy is wasted and turns to heat
2. Damages equipment/objects like when you slide it on the floor
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a certain compound was found to contain 54.0 g of carbon and 10.5 grams of hydrogen. its relative molecular mass is 86.0. find t
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Answer:

empirical formula = C3H7

molecular formula = C6H14

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DerKrebs [107]

can you upload a clearer photo?

6 0
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The pipet used for transferring the pickle juice to the flask was dirty and consequentially some of the pickle juice stuck to th
lesya [120]

Explanation:

Since, some of the given sample is stuck inside and behind the pipet. Hence, there will occur a decrease in the percent of acetic acid.

This is because a decrease in concentration of the acid will also lead to a decrease in the amount of sample taken for the estimation. Since. lesser is the amount or concentration present lesser will be its analyte concentration.

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Therefore, the analyte concentration in the pickel will also be less.

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4 years ago
The modern periodic table is different from Mendeleevs in several ways. In which way are the two tables the same?
otez555 [7]
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7 0
3 years ago
A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree
lions [1.4K]

Answer:

The new temperature of the water bath 32.0°C.

Explanation:

Mass of water in water bath ,m= 8.10 kg = 8100 g ( 1kg = 1000g)

Initial temperature of the water = T_1=33.9^oC=33.9+273K=306.9 K

Final temperature of the water = T_2

Specific heat capacity of water under these conditions =  c = 4.18 J/gK

Amount of energy lost by water = -Q = -69.0 kJ = -69.0 × 1000 J

( 1kJ=1000 J)

Q=m\times c\times \Delta T=m\times c\times (T_2-T_1)

-69.0\times 1000 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)

-69,000.0 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)

T_2=304.86 K=304.86 -273^oC=31.86^oC\approx 32.0^oC

The new temperature of the water bath 32.0°C.

5 0
4 years ago
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