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Effectus [21]
4 years ago
6

What of the following properly converts 123.45 to 1 significant digit?

Chemistry
1 answer:
Semmy [17]4 years ago
5 0
The answer is:  [B]:  " 100 " .
______________________________________
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Nostrana [21]
The answer is a as it is balanced and has the shown molecules
6 0
3 years ago
What is the relationship between chemical and electrical energy
soldi70 [24.7K]

Answer:

Electrochemistry,

Explanation:

Electrochemistry is a branch of chemistry concerned with the relation between electricity and chemical change. Many spontaneously occurring chemical reactions liberate electrical energy, and some of these reactions are used in batteries and fuel cells to produce electric power.

I Hope This Helps!!!!!

4 0
3 years ago
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How many moles of Na are in 42 g of Na? ​
s2008m [1.1K]
The answer is 1.83 moles of Na.

3 0
3 years ago
The ΔHvap of a certain compound is 47.45 kJ·mol−1 and its ΔSvap is 59.15 J·mol−1·K−1. What is the boiling point of this compound
podryga [215]

Answer:

802.2 K

Explanation:

To solve this problem we can use the formula:

  • Tb = ΔHvap / ΔSvap

Where Tb is the boiling point (in K).

We already know the values of both ΔHvap and ΔSvap, so we calculate Tb:

  • ΔHvap = 47.45 kJ·mol⁻¹ = 47.45x10³J·mol⁻¹

Tb = 47.45x10³J·mol⁻¹/59.15 J·mol⁻¹·K⁻¹

  • Tb = 802.2 K

So the boiling point of the compound is 802.2 K (or 529 °C)

7 0
3 years ago
Water has a boiling point of 100°C.
SashulF [63]

Answer: higher,because when salt is dissolved bonds form between the salt ions and the water molecules

5 0
3 years ago
Read 2 more answers
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