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vlada-n [284]
2 years ago
14

How does gravity depend on the mass of the two objects

Chemistry
1 answer:
marin [14]2 years ago
3 0

Answer:

Yes

Explanation:

the gravity of an object depends on its mass. that's why the sun has its gravitational pull.

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Create an atom diagram using the Bohr model. Directions Choose three elements from the following list. Use a periodic table to d
Setler [38]

Answer:

Explanation:

proposed an early model of the atom as a central nucleus containing protons and neutrons being orbited by electrons in shells. As previously discussed, there is a connection between the number of protons in an element, the atomic number that distinguishes one element from another, and the number of electrons it has. In all electrically-neutral atoms, the number of electrons is the same as the number of protons. Each element, when electrically neutral, has a number of electrons equal to its atomic number.

3 0
2 years ago
Read 2 more answers
What mass of slaked lime is needed to decompose 10 g of ammonium chloride to give 100% yield? Ca(OH)2 + 2NH4Cl → CaCl2 + 2NH3 +
dimulka [17.4K]

Answer is: mass of slaked lime is 6.92 grams.

Balanced chemical reaction: Ca(OH)₂ + 2NH₄Cl → CaCl₂ + 2NH₃ + 2H₂O.

m(NH₄Cl) = 10 g; mass of ammonium chloride.

M(NH₄Cl) = 14 + 1·4 + 35.5 · g/mol.

M(NH₄Cl) = 53.5 g/mol; molar mass of ammonium chloride.

n(NH₄Cl) = m(NH₄Cl) ÷M(NH₄Cl).

n(NH₄Cl) = 10 g ÷ 53.5 g/mol.

n(NH₄Cl) = 0.187 mol; amount of ammonium chloride.

From balanced chemical reaction: n(NH₄Cl) : n(Ca(OH)₂) = 2 : 1.

n(Ca(OH)₂) = 0.093 mol.

m(Ca(OH)₂) = n(Ca(OH)₂) · M(Ca(OH)₂).

m(Ca(OH)₂) = 0.093 mol · 74.1 g/mol.

m(Ca(OH)₂) = 6.92 g.

8 0
3 years ago
How might someone dispute the results of your investigation? How might you counter the argument?
erik [133]
Someone may think the results are wrong you can fight with them through words or the use of hands in which you can toss them
5 0
2 years ago
Whichoneisaninsulator​
yuradex [85]

Answer:

which one you didnt explain or added attachment?

7 0
3 years ago
The half life for the radioactive decay of potassium- to argon- is years. Suppose nuclear chemical analysis shows that there is
Semmy [17]

Answer:

Therefore, the age of the rock sample is 2.7 * 10⁹ years

<em>Note: The question is missing some parts. The complete question is:</em>

<em>The half-life for the radioactive decay of potassium-40 to argon-40 is 1.26 * 10⁹ years. Suppose nuclear chemical analysis shows that there is 0.771 mmol of argon-40 for every 1.000 mmol of potassium-40 in a certain sample of rock. Calculate the age of the rock. Round your answer to significant digits.</em>

Explanation:

Half-life is defined as the amount of time it takes a given quantity to decrease to half of its initial value.

In radioactive isotopes of elements, the half-life is used to calculate the age of the materials in which the radioisotopes are found.

The half-life is related to the age of a material through the following formula:

t = t½㏑(Nt/N₀) / -㏑2

where t is the age of the material;

t½ is the half-life of the material

Nt is the amount of material left after time t

No is the starting amount of material

From the question:

t½ = 1.26 * 10⁹ years

Nt = 1.000 - 0.771 = 0.229

N₀ = 1.000

-㏑2 = -0.693

t = {1.26 * 10⁹ * ㏑(0.229)} / -0.693

t = 2.68 * 10⁹ which is approximately 2.7 * 10⁹ years to two significant digits.

Therefore, the age of the rock sample is 2.7 * 10⁹ years

8 0
2 years ago
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