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a_sh-v [17]
3 years ago
7

True or False: An atom is neutrally charged.

Chemistry
1 answer:
Darya [45]3 years ago
7 0
1.) False
2.)True.

hope that helped
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On what is the geologic time scale based?
nekit [7.7K]

Answer: Either A or D

Geologists and paleontologists constructed the geologic table based on the relative positions of different strata and fossils, and estimated the time scales based on studying rates of various kinds of weathering, erosion, sedimentation, and lithification.

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A piece of asphalt has a volume of 5.0 cm3 and a mass of 7.5 g. What is the density of the asphalt?
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How much heat is released as the temperature of 25.2 grams of iron is decreased from 72.1°C to 9.8°C? The specific heat of iron
prisoha [69]

Answer:

Q=-697.06\ J

Negative sign says that release of heat.

Explanation:

The expression for the calculation of the heat released or absorbed of a process is shown below as:-

Q=m\times C\times \Delta T

Where,  

\Delta H  is the heat released or absorbed

m is the mass

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\Delta T  is the temperature change

Thus, given that:-

Mass = 25.2 g

Specific heat = 0.444 J/g°C

\Delta T=9.8-72.1\ ^0C=-62.3\ ^0C

So,  

Q=25.2\times 0.444\times -62.3\ J=-697.06\ J

Negative sign says that release of heat.

8 0
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Is kelp a living or non-living thing?
Fed [463]

Answer:

non living

Explanation:

they trying to trick you

3 0
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What kind of bond is present in HCI? (Use the electronegativity values from
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Hope this helps you have a great day.
8 0
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