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HACTEHA [7]
2 years ago
9

In the Energy and Specific Heat lab, how should the water bath be stabilized over the heat source? Select one:

Chemistry
2 answers:
Reika [66]2 years ago
5 0

Answer:

c

Explanation:

butalik [34]2 years ago
3 0

Answer:

C

Explanation:

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A high speed train travels 176 miles in 7 hours. What is the speed of the train
umka21 [38]

Answer:

25 mph

Explanation:

So we have to find the unit rate, or you could use the DTS triangle, but both say you have to divide, so our equation is:

176 ÷ 7 = 25.14

But I'm going to round that

So the train is traveling at 25 mph

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4 0
2 years ago
According to the law of conservation of energy, the energy released by the system must be transferred to and absorbed by the sur
Andrew [12]
True! 
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5 0
3 years ago
Iodine-131 decays with a half-life of 8.02
dlinn [17]
Radioactive material undergoes 1st order decay kinetics.

For 1st order decay, half life = 0.693/k

where k = rate constant

k = 0.693/half life = 0.693/8.02 = 0.0864 day-1

Now, for 1st order reaction,
k = \frac{2.303}{t} X log \frac{initial.conc}{final.conc}

Given: t = 6.01d, initial conc. = 5mg

∴0.0864 = \frac{2.303}{6.01} X log \frac{5}{final.conc}
∴ final conc. = 2.975 mg
3 0
3 years ago
Is alcohol evaporating a chemical or physical change
snow_tiger [21]
Physical change , the states are changing from liquid to gas
8 0
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Breaking a solid reactant into pieces results in
Hitman42 [59]

Answer:

If one of the reactants is a solid, only the particles at the surface can partake in the reaction. Breaking the reactant into smaller pieces increases the surface and more particles are exposed to the reaction mixture. This results in an increased frequency of collisions and therefore a faster rate of reaction

6 0
2 years ago
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