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denpristay [2]
2 years ago
5

Please help ASAP. If you know the answer to few of the parts then tell me the answer to the part you know with explanation and a

lso type the letter of which part you solved​

Chemistry
1 answer:
Rufina [12.5K]2 years ago
4 0

Answer:

Most Medicare Advantage plans also fold in prescription drug coverage. Not all of thesef, g, and h. If you don't know the answer to all parts then just tell me the answer to the parts you know, and if you

The best way to clean any computer component or device is to follow the manufacturer's instructions in your user manual.

Always power off the system first.

Always use anti-static wristband or other professional grounding devices.

Never work on carpeted surfaces.

Please help me with this question, I already did part a and part b. Can someone please tell me how to do part c, d, e,

Explanation:

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How many moles of aluminum oxide al2o3 are in a sample with a mass of 204.0
erik [133]

Answer:

2 moles

Explanation:

Let us first start by calculating the molecular mass of Al₂O₃.

The mass of a mole of any compound is called it's molar mass. 1 molar mass 6.02 X 10²³, or Avogadro's number, of compound entities.

Say, 1 mole of Al₂O₃ has 6.02 X 10²³ of Al₂O₃ molecules/atoms. It also has 2*6.02 X 10²³ number of Al atoms and 3*6.02 X 10²³ number of O atoms.

Molecular mass of Al : 26.981539 u

Molecular mass of O: 15.999 u

Therefore, molecular mass of Al₂O₃ is:

= (2*26.981539) + (3*15.999) u

= 101.960078 u

This can be approximated to 102 u.

1mole weighs 102 u

So, 2moles will weigh 2*102 = 204 u

3 0
2 years ago
Read 2 more answers
Please refer to image please
GarryVolchara [31]

Answer:

76.9L

Explanation:

Based on the graph, whenever the temperature increases by 100K, the volume increases by 10L, so do 769/10

7 0
2 years ago
Express 749 000 000 in scientific notation,
Dima020 [189]

Answer:

7.49 × 108

Explanation:

Scientific notation is a way to express numbers in a form that makes numbers that are too small or too large more convenient to write. It is commonly used in mathematics, engineering, and science, as it can help simplify arithmetic operations. In scientific notation, numbers are written as a base, b, referred to as the significant, multiplied by 10 raised to an integer exponent, n, which is referred to as the order of magnitude:

8 0
3 years ago
Please help!!
hichkok12 [17]
It’s 65% average that your answer
6 0
2 years ago
An experiment applies heat to a substance and produces a gas that is a new and different substance. Choose the true statement.
bearhunter [10]
Well if the change is reversible then it is a physical change, but if not then it is a chemical change.
4 0
3 years ago
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