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JulijaS [17]
3 years ago
14

Which of the following is used as a thermal insulator?

Chemistry
2 answers:
balu736 [363]3 years ago
8 0
B. A los to cover a coffee mug
algol [13]3 years ago
3 0

Answer:

A ceramic mug to hold the coffee

Explanation:

It's meant mainly for certain drinks that are warm because it's best at keeping them warm

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Can you please help me and can you show your work please
natali 33 [55]

Answer:

1. 25 moles water.

2. 41.2 grams of sodium hydroxide.

3. 0.25 grams of sugar.

4. 340.6 grams of ammonia.

5. 4.5x10²³ molecules of sulfur dioxide.

Explanation:

Hello!

In this case, since the mole-mass-particles relationships are studied by considering the Avogadro's number for the formula units and the molar mass for the mass of one mole of substance, we proceed as shown below:

1. Here, we use the Avogadro's number to obtain the moles in the given molecules of water:

1.5x10^{25}molecules*\frac{1mol}{6.022x10^{23}molecules} =25 molH_2O

2. Here, since the molar mass of NaOH is 40.00 g/mol, we obtain:

1.2mol*\frac{40.00g}{1mol} =41.2g

3. Here, since the molar mass of C6H12O6 is 180.15 g/mol:

45g*\frac{1mol}{180.15g}=0.25g

4. Here, since the molar mass of ammonia is 17.03 g/mol:

20mol*\frac{17.03g}{1mol}=340.6g

5. Here, since the molar mass of SO2 is 64.06 g/mol:

48g*\frac{1mol}{64.06g} *\frac{6.022x10^{23}molecules}{1mol} =4.5x10^{23}molecules

Best regards!

5 0
3 years ago
Can anyone help me on this please.
exis [7]
It would have to be 40.0 only because it wouldn’t add up
8 0
2 years ago
Read 2 more answers
Can you help me please, I’ll mark brainliest.
GrogVix [38]

Answer:

i think A

Explanation:

6 0
3 years ago
Which example illustrates the transfer of energy through RADIATION?
iragen [17]
I think it is feeling warm air while standing in front of the blower from a heating system.

Hope this helps! :)
6 0
4 years ago
Read 2 more answers
a material has a density of 8.9 g/cm^3. You have six cubic centimeters of the substance. What is the material's mass in grams?
Svet_ta [14]
If the formula for density=m/v, you can manipulate this formula to the the mass. After manipulation, you get the equation for mass to be: m=density * volume. With density and volume given, we can find the mass.

mass= (8.9) * 6 = 53.4grams
7 0
3 years ago
Read 2 more answers
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