CHEMISTRY HIGH SCHOOL

2. A sample of iron has the dimensions of 2.0 cm x 3.0 cm x2.0 cm. It has a mass of 94.0 grams. What is the density of
iron? (8 points)

Answers

Answer 1
Answer:

Answer:

first change cm to m and g to kg so you will find the volume first which is 0.02 by 0.03 by 0.02 your answer is 0.000012 m . using the formula density=mass/volume take 0.094/ 0.00012 then divide

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Answers

Arteries, Veins, and Capillaries

Pure,24k gold is very malleable.by mixing gold with other metals it becomes less malleable.in what situations would you want to use gold that is not as malleable?

Answers

You could use the less malleable mixture of minerals.  Say you have a gold earring this is bad because overtime it goes through lots of wear and tear, the shape of the earring will change. If it was less malleable it will withstand more wear and tear.

3 x 1 US cup volume in millilitres (mL

Answers

Answer:

3 US Cups = 720 ml.

Explanation:

  1. Officially, a US Cup is 240ml (or 8.45 imperial fluid ounces.)
  2. 3 x 1 US Cup = 3 US Cups
  3. 1 US Cup = 240 ml.
  4. ∴ 3 US Cups = 3 x 240ml
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A mover packs books, CDs, and DVDs into a moving box. If the box contains 6.5 kg of books, 1.5 kg of CDs, and 2.0 kg of DVDs, what is the percent by mass of each object in the box?

Answers

Given: 
M1 = 6.5 kg of books
M2 = 1.5 kg of CDs
M3 = 2.0 kg of DVDs

Required: percent by mass of each object

Solution:
First, we calculate the total mass.

M = 6.5 kg + 1.5 kg + 2.0 kg =  10 kg

Percent by mass is calculated by getting the ration of the mass of an object and the total mass multiplied by 100 to get the percent.

%M1 = 6.5 / 10 x 100 = 65%
%M2 = 1.5/10 x 100 = 15%
%M3 = 2.0/10 x 100 = 20%

%M1 = 6.5 / 10 x 100 = 65%

%M2 = 1.5/10 x 100 = 15%

%M3 = 2.0/10 x 100 = 20%

Which reaction will most likely take place?Pt + FeCl3
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Answers

The correct answer of the given question above would be the third option: Li + ZnCO3. The reaction that will most likely take place is Li + ZnCO3. This is the reaction that will most likely take place since Lithium is very active. Hope this is the answer you are looking for. 

I agree, the answer is Li+ZnCO3.

What does the atomic mass describe?a. The mass of the protons in the atom
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Answers

B., the mass of the nucleus of the atom.
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