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zloy xaker [14]
3 years ago
12

Using the periodic table, determine the number of PROTONS for the element Li​

Chemistry
1 answer:
KIM [24]3 years ago
4 0
The number of protons for element Li is 3
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Jupiter looks as if it has stripes, thanks to ______ that surrounded it.
bulgar [2K]
Jupiter looks as if it has stripes, thanks to the gas that surrounds it :)
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3 years ago
A system does 213 J of work on its environment and gains 77.8 J of heat in the process. Find the change in the internal energy o
natita [175]

Answer:

a) Change in internal energy of the system = - 135.2 J

b) Change in internal energy of the environment = 135.2 J

Explanation:

From the mathematical statement of the first law of thermodynamics,

ΔU = Q - W

ΔU = Change in internal energy of the system = ?

Q = heat transferred into or out of the system. For this system, heat is transferred into it, Q = 77.8 J

W = workdone = 213 J (positive because work is done by the system on the environment)

ΔU = 77.8 - 213 = - 135.2 J

The change in internal energy of the environment is just the negative of that of the system. The balance is always so.

Hence, change in internal energy of the environment = -(- 135.2) = 135.2 J

4 0
3 years ago
What is the molecular formula of sodium hydroxide??​
Vladimir [108]

Answer:

Formula and structure: The chemical formula of sodium hydroxide is NaOH, and its molar mass is 40.01 g/mol. It is the alkali salt of sodium, and its structure is shown below: It is an ionic compound consisting of sodium cation (Na+) and hydroxide (OH-) anion.

Explanation:

3 0
3 years ago
Read 2 more answers
Calculate the mass in grams of 24.5 mL of diethyl ether, an anesthetic that has a density of 0.713 g/mL. Round your answer to th
Contact [7]

Answer:

17.48

Explanation:

mass=density×volume

= 0.713g/ml × 24.5 ml

= 17.4685

≈ 17.47

6 0
3 years ago
An electric field travels away from a charge and toward a _?_ charge.
andre [41]

An electric field travels away from a <u>positive charge</u> and toward a <u>negative charge</u>.

<h3>What is electric field?</h3>

Electric field is the region of space where the impact of electric force is felt.

The electrostatic field is always directed away from positive charges and toward negative charges, and, field lines must go away from positive charges and toward negative ones.

Thus, an electric field travels away from a positive charge and toward a negative charge.

Learn more about electric field here: brainly.com/question/14372859

#SPJ1

7 0
2 years ago
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