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SVEN [57.7K]
3 years ago
7

Need help w the questions in the pic! thankyouu

Chemistry
1 answer:
katrin [286]3 years ago
8 0

Answer: Here are the answers

Explanation:

7a) Calcium Chloride +water+carbon dioxide

b)Calcium Oxide +Carbon dioxide

8a) zinc + carbon monoxide

b) Aluminum + Carbon dioxide

c) Lead + carbon dioxide

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4. How many weeks are equal to 2.94 x 10 to the power of 6 minutes?
OverLord2011 [107]

Answer:

292 weeks

Explanation:

5 0
3 years ago
What is the molarity of a 2.0L solution that was made up with 4.0 moles of NaCl?
Finger [1]

Answer:

[NaCl]: 2M

Explanation:

This solution is made of NaCl therefore:

Our solute is NaCl

Moles of solute: 4

Our solution's volume is 2L

Molarity are the moles of solute contained in 1L of solution (mol/L)

[NaCl]: 4 mol /2L = 2M

We can also make a rule of three:

In 2 L we have 4 moles of solute

So, In 1 L we must have (1 . 4) /2 = 2 M

8 0
3 years ago
How do the atomic mass and atomic number compare for helium?
Sonja [21]

The atomic mass is greater than the atomic number.

4 0
3 years ago
Read 2 more answers
List down some examples of matters based on its physical state (Solid,
Anna [14]

Answer:

Examples of Solids

1. Brick

2. coin

3. Iron bar

4. rock

5. wood

Examples of Liquids

1. Blood

2. Honey

3. Wine

4. Water

5. oil

Examples of Gases

A gas does not have a defined shape or volume, so it can expand to fill any size or shape of a container. Particles in gases are widely separated, compared to those in liquids and solids.

Explanation:

5 0
2 years ago
This is usually pretty easy but I'm having a tough time
Kamila [148]

Answer:

Define the Problem

Background Research

Write a Hypothesis

Carry Out the Experiment

Analyze Data

Draw a Conclusion

Explanation:

First of all, identify the first and last steps before figuring out the middle.

In order, the first and last steps should be

Define the Problem

...

Draw a Conclusion.

Next, you can add your answers in the middle, from beginning to end. That would be,

Define the Problem

Background Research

Write a Hypothesis

Carry Out the Experiment

Analyze Data

Draw a Conclusion

Let me know if this is inaccurate as I am learning everyday. Hope this helped!

3 0
3 years ago
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