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Makovka662 [10]
3 years ago
14

Which of the following are mixtures? Salt, air, water salt water

Chemistry
1 answer:
Mice21 [21]3 years ago
6 0
Salt, salt water are both mixtures if i remember from chemistry
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A gecko used its sticky feet to crawl from the bottom of a window to the top of
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Decreased

Explanation:

You're faster when you go downhill than you are uphill.

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3 years ago
Now that you have the knowledge of the highest specific heat capacity and lowest porosity, which material would you choose to bu
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Answer:

Now that you have the knowledge of the highest specific heat capacity and lowest porosity, which material would you choose to build Rover's new doghouse roof?

Oak has the highest heat capacity; therefore, oak can absorb a lot of heat without raising its temperature. This is good for very hot areas. Concrete has the lowest porosity so water will not leak through its pores and drip into the doghouse. This is good for rainy areas. However, clay is second on both lists and might be a good choice overall for hot and rainy weather conditions. Rover should be happy with this.

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7 0
3 years ago
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Look at the equation for the reaction for nitric oxide and oxygen. Do you think this is a single-step reaction or a multistep re
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Answer:

This is most likely a multi-stepped reaction.

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4 0
3 years ago
What is the Gibbs energy, LaTeX: \Delta GΔ G, when the very first crystal of potassium nitrate forms in solution while cooling,
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74.344 kJ.

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Below is an attachment containing the solution.

3 0
3 years ago
If 5g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%?
Cerrena [4.2K]

Answer: 34.4 g

Explanation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

\text{Number of moles of hydrogen}=\frac{5g}{2g/mol}=2.5moles

As CO is in excess, H_2 is the limiting reagent and thus it will limit the formation of products.

CO+2H_2\rightarrow CH_3OH

According to stoichiometry:

2 moles of hydrogen produce = 1 mole of CH_3OH

2.5 moles of hydrogen produce = \frac{1}{2}\times 2.5=1.25 moles of CH_3OH

Mass of CH_3OH=moles\times {\text {Molar mass}}=1.25\times 32=40g

But as % yield is 86%, mass of CH_3OH produded is \frac{86}{100}\times 40=34.4g

Thus 34.4 g of CH_3OH is produced.

6 0
3 years ago
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