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Rudiy27
3 years ago
10

I need to figure out what the unit to measure time is

Chemistry
1 answer:
Lady_Fox [76]3 years ago
4 0
Measure time by seconds.
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WHY IS THE OCEAN SALTY ALSO I CANT TAKE OF CAP LOCKS ON A CROME BOOK
serious [3.7K]

Answer:

What happens is,that,when a river flows into the ocean it carries some land with it. This land is made up of rocks and soil, which contains minerals. One of these minerals is Salt.

Explanation:

6 0
3 years ago
How is science different from other ways of learning about the world??? PLSS HELPP ASAPPP! :)
ivolga24 [154]

Answer:

Science does not change across region.

Explanation:

Regardless of language barriers or methods of learning, science is the study of fundamental concepts that explain how our world and the universe works.

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3 years ago
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PLSSSSS HELP I DONT GET THIS PROBLEMMMM
Aleks [24]

Answer:

C. 7370 joules.

Explanation:

There is a mistake in the statement. Correct form is described below:

<em>Using the above data table and graph, calculate the total energy in Joules required to raise the temperature of 15 grams of ice at -5.00 °C to water at 35 °C. </em>

The total energy needed to raise the temperature is the combination of latent and sensible heats, all measured in joules, and represented by the following model:

Q = m\cdot [c_{i} \cdot (T_{2}-T_{1})+L_{f} + c_{w}\cdot (T_{3}-T_{2})] (1)

Where:

m - Mass of the sample, in grams.

c_{i} - Specific heat of ice, in joules per gram-degree Celsius.

c_{w} - Specific heat of water, in joules per gram-degree Celsius.

L_{f} - Latent heat of fusion, in joules per gram.

T_{1} - Initial temperature of the sample, in degrees Celsius.

T_{2} - Melting point of water, in degrees Celsius.

T_{3} - Final temperature of water, in degrees Celsius.

Q - Total energy, in joules.

If we know that m = 15\,g, c_{i} = 2.06\,\frac{J}{g\cdot ^{\circ}C}, c_{w} = 4.184\,\frac{J}{g\cdot ^{\circ}C}, L_{f} = 334.72\,\frac{J}{g}, T_{1} = -5\,^{\circ}C, T_{2} = 0\,^{\circ}C and T_{3} = 35\,^{\circ}C, then the final energy to raise the temperature of the sample is:

Q = (15\,g)\cdot \left[\left(2.06\,\frac{J}{g\cdot ^{\circ}C} \right)\cdot (5\,^{\circ}C)+ 334.72\,\frac{J}{g} + \left(4.184\,\frac{J}{g\cdot ^{\circ}C}\right)\cdot (35\,^{\circ}C) \right]

Q = 7371.9\,J

Hence, the correct answer is C.

8 0
3 years ago
29g of copper pellets are removed from a 300 Celsius oven and immediately dropped into 100 mL of water at 22 Celcius in an insul
Nesterboy [21]
If we use the next formula to determine this:<span>ΔQ=mcΔT
Then we can get to the result. Be</span>cause of the conservation of energy, the quantity of heat remains the same. So what we do is:<span><span>c1</span>∗<span>m1</span>∗(<span>T1</span>−<span>T∗</span>)=<span>c2</span>∗<span>m2</span>∗(<span>T∗</span>−<span>T2</span>)</span><span> when plugging in 0.39 for copper and 4.19 we get 29°C for the resulting temperature. I hope this can help you</span>
5 0
3 years ago
More dense substances will ...
REY [17]

Answer: B

Explanation:

The more dense an object is, the more it will sink below something. If the liquid below the more dense object is even denser, it is going to sink.

The light object will not be able to handle the heavy object. The answer to the question is option B.

4 0
3 years ago
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