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Readme [11.4K]
3 years ago
12

Which of the following statements describes electromagnetism?

Chemistry
1 answer:
loris [4]3 years ago
7 0

Answer:

b

Explanation:

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Which of the following describes an energy transformation from chemical to electrical to light energy?
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The answer is B. a flashlight uses a battery to operate.

The battery represents the chemical energy. This is converted into electricity, which is converted into light energy.

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2 years ago
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How many moles of carbon dioxide are produced from 8.73 moles of tristearin?​
matrenka [14]

Answer:

Explanation:

  8.73 mol                                         x mol

2 C57H110O6(S) + 163 O2(g)  --->  114 CO2(g) + 110 H2O(I)

2 mol                                               114 mol

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8 0
3 years ago
all of the following are physical properties of a substance in the in the liquid state except. A) definite volume B) Not easily
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<span> indefinite volume </span>

<span>If the mass is definite and the density is definite, </span>
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3 years ago
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Henry divides 1.060g by 1.0mlbto find the density of his water sample. How many significant figures should he include in the den
kykrilka [37]
<span>Henry divides 1.060 g by 1.0 mL to find the density of his water sample.
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3 0
3 years ago
The mass of water in a single popcorn kernel was found to be 0.905 grams after it popped at a temperature of 175 °C. Using the i
Rus_ich [418]

Answer:

0.583 kilojoules

Explanation:

The amount of heat required to pop a single kernel can be calculated using the formula as follows:

Q = m × c × ∆T

Where;

Q = amount of heat (J)

m = mass of water (g)

c = specific heat capacity of water (4.184 J/g°C)

∆T = change in temperature

From the given information, m = 0.905 g, initial temperature (room temperature) = 21°C , final temperature = 175°C, Q = ?

Q = m × c × ∆T

Q = 0.905 × 4.184 × (175°C - 21°C)

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Q = 583.044 Joules

In kilojoules i.e. we divide by 1000, the amount of heat is:

= 583.04/1000

= 0.583 kilojoules

8 0
3 years ago
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