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Lina20 [59]
3 years ago
12

A metal cube has a mass of 20 g and a volume of 5 ml. What is the density? Is the cube made of pure aluminum? Explain your answe

r in the "other" area. * A.2.7 g/mL B.4 g/mL C.100 g/ml D.Yes it is aluminum E.No it is not aluminum Other:__________________________________________________________
Chemistry
1 answer:
Shtirlitz [24]3 years ago
3 0

Explanation:

Given that,

Mass of metal cube, m = 20 g

Volume of cube, V =5 mL

We need to find the density of the cube. Mass per unit volume equals density.

d=\dfrac{m}{V}\\\\d=\dfrac{20\ g}{5\ mL}\\\\d=4\ g/mL

So, the density of the cube is 4 g/ml.

We know that the density of Aluminium is 4 g/mL.

So, the cube is not Aluminium cube.

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Which elements occupy the same group in the periodic table
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Answer:

Elements that occupy the same column on the periodic table

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9.50 L of Fluorine gas at STP reacts with 6.945x1024 formula units of Chromium (VI) chloride.
lorasvet [3.4K]

Answer:

Again please specify your question, you still haven't indicated what you want to be solved.

by formula units I assume you mean atoms?

I'll edit my answer accordingly if you could specify down in the comments.

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2 years ago
What mass of magnesium oxide is formed when 48.62g of magnesium is reacted with excess oxygen?
marin [14]

Answer: -

81.03 g magnesium oxide is formed when 48.62g of magnesium is reacted with excess oxygen

Explanation: -

Atomic mass of Mg = 24 g

Molar mass of MgO = 24 x 1 + 16 x 1

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The balanced chemical equation for this reaction is

2 Mg + O₂ → 2MgO

From the balanced chemical equation we see

2 mol of Mg gives 2 mol of MgO.

2 x 24 g of Mg gives 2 x 40g of MgO.

48.62 g of Mg gives \frac{2 x 40 g MgO}{2 x 24 g Mg} x Mg

= 81.03g of MgO

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Nucleic Acids, Protein Coat,and Lipid Membrane

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B. A student who prefers to study by recalling personal examples that connect to what is being learned, makes lists of ways to use skills in real scenarios (like at work), and starts a discussion with another student to talk about a topic most likely prefers Auditory.

<h3>What is Auditory learning style?</h3>

Auditory learning style is a method of learning that involves listening.

Auditory learning means that a student learns most effectively by listening.

In Auditory learning style, students would prefer listening to a lecture over reading a textbook, or hearing the instructions for a project instead of figuring it out hands-on.

Thus, a student who prefers to study by recalling personal examples that connect to what is being learned, makes lists of ways to use skills in real scenarios (like at work), and starts a discussion with another student to talk about a topic most likely prefers Auditory.

Learn more about Auditory here: brainly.com/question/27824005

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