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Andrews [41]
2 years ago
7

6.Which of the following is NOT true about the lens?

Chemistry
1 answer:
ipn [44]2 years ago
7 0
The answer is A btw
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HELP FAST 100 PTSCalculate the amount of heat needed to convert 100.0 g of liquid water at 25 °C to water at 100 °C.
Alex Ar [27]

Answer:

31,380 Joules

Explanation:

Given Data:

Mass = m = 100 g

Temperature 1 = = 25 °C

Temperature 2 = = 100 °C

Specific Heat Constant = c = 4.184

Change in Temp. = ΔT = 100 - 25 = 75 °C

Required:

Heat = Q = ?

Formula:

Q = mcΔT

Solution:

Q = (100)(4.184)(75)

Q = 31, 380 Joules

Hope this helped!

~AH1807

4 0
3 years ago
Read 2 more answers
Use the mass and volume data to calculate the density of mercury to the nearest tenth. Mass of mercury = 57 g Volume of mercury
Elena-2011 [213]

Density = mass/volume = 57g/4.2 mL ≈ 13.6 g/mL

7 0
3 years ago
Read 2 more answers
A magnet sticks to an iron can and an iron rod. This is an intrinsic property. <br> True or false?
lesantik [10]

Answer:

True

Explanation:

Well,I hope it helps....

Just correct me if I'm wrong..

8 0
3 years ago
How many molecules are in 1.2 moles of H20?​
Otrada [13]
<h3>Answer:</h3>

7.226 × 10^23 molecules.

<h3>Explanation:</h3>
  • A compound is a substance that is made by two or more atoms from different elements.
  • A mole of a compound contains a number of molecules equivalent to Avogadro's number,  6.022 × 10^23.
  • That is, one mole of a compound contains 6.022 × 10^23 molecules.

In this case we are given;

Number of moles of H₂O as 1.2 moles

But, 1 mole of H₂O contains 6.022 × 10^23 molecules.

We are required to calculate the number of molecules present;

  • To calculate the number of molecules we are going to multiply the number of molecules in one mole by the number of moles.
  • Therefore;

Number of molecules = 1.2 moles × 6.022 × 10^23 molecules/mole

                                    = 7.226 × 10^23 molecules.

Thus, 1.2 moles of water contains 7.226 × 10^23 molecules.

4 0
3 years ago
Which diagram represents this molecule?
zepelin [54]

Answer:

  C

Explanation:

The molecule has 8 carbon atoms joined by 7 C-C bonds.

The first two diagrams show 6 carbon atoms, not 8.

The last two diagrams show line segments representing C-C bonds. Only choice C shows 7 such segments.

The appropriate choice is C.

7 0
3 years ago
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