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nadezda [96]
3 years ago
14

3. For a boat to float on water, it must have a density lower than the density of water. Compare the densities of your unknown l

iquid and solid. If a boat was made of the unknown solid, would it float on the unknown liquid? Explain your answer.
Chemistry
2 answers:
aev [14]3 years ago
5 0

Answer:it depense.

Explanation: whether a solid to floats or sinks is determined by its density. If the solid is less dense than the liquid, it will float but if denser, it will sink. Whether the solid is known or not, as long as its density is greater than that of the liquid, it will definitely sink. But if it is lesser, it will definitely floats. Remember, density is simply mass over the volume m/v.

Fittoniya [83]3 years ago
4 0

Answer: No

Explanation: if a boat was made of the unknown solid it would not float because it’s density was much higher than the density of water.

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If 200. mL of 0.60 M MgCl2(aq) is added to 400 mL of distilled water, what is the concentration of Mg and Cl in the resulting so
sladkih [1.3K]

Answer:

C. 0.20 M Mg ion & 0.40 M Cl ion

Explanation:

MgCl₂ is a ionic salt which is dissociated as this

MgCl₂  →  Mg²⁺  +  2Cl⁻

First of all, we have a solution of 200 mL, with [MgCl₂] = 0.6M

Molarity . volume = moles.

0.6 mol/l . 0.2l = 0.12 mol

  MgCl₂  →  Mg²⁺  +  2Cl⁻

0.12mol      0.12         0.24

This moles are also in 400mL of water, so the new concentration is

[Mg²⁺] = 0.12 m/0.6L = 0.2M

[Cl⁻] = 0.24 m/0.6L = 0.4M

Remember we initially have 200mL and then, we add 400 mL, so we supose aditive volume. (600mL)

8 0
3 years ago
7. True or false. Where air masses collide, weather changes
ella [17]

Answer:true

Explanation:

8 0
3 years ago
145.8g of Mg contains how many moles?
Tems11 [23]
A: 6 moles
You have to find the molar mass and then multiply
8 0
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What is formed when 2 non metals reacts?
ryzh [129]

Answer:

A) covalent bond

Explanation:

Covalent bonding generally happens between nonmetals.

4 0
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A hand-operated conduit bender with a shoe for bending 1-inch EMT can also be used to bend
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If your choices are the following:
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B. 1-inch rigid conduit.
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D. 1/2 inch EMT.

Then the answer is C.
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