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Lapatulllka [165]
3 years ago
12

Light energy travels in the form of

Chemistry
2 answers:
HACTEHA [7]3 years ago
8 0

Answer:

C. convection currents

bezimeni [28]3 years ago
6 0
B. Electromagnetic waves
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C. 1.1 3 1023 Ag atoms
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3 years ago
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How many significant ZEROES are represented in the following number?<br><br> 0.000004000
Igoryamba

Answer:

3 significant zeroes

Explanation:

To count the number of significant figures, you must pass the zeroes until you reach a non-zero value. Once you reach it, count anything after that as significant values, including the non-zero value itself.

The number has 4 significant figures with 3 significant zeroes.

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3 years ago
29. If a walnut is burned in a
harkovskaia [24]

Energy were released from the walnut, q = 1,673.6 J

<h3>Equation :</h3>

To find the energy using formula,

q = mcΔt

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q is charge

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Δt is change in temperature

So, given

t₁ = 50°C

t₂ = 60°C

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c = 4.184 J/g

Now putting the values known,

We get,

q = mc(t₂ - t₁)

q = 40g x 4.184 J/g x  (60 - 50)

q = 167.36 J x 10

q = 1,673.6 J

<h3>What is heat energy?</h3>

Heat is the thermal energy that is transferred when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.

To know more about specific heat :

brainly.com/question/11297584

#SPJ9

8 0
1 year ago
Which is larger Ca or Ca2+
kipiarov [429]

Answer:

Ca is larger than the Ca2+ because Ca2+ has a greater positive charge and electrons repel the nucleus.

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3 years ago
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Two or more elements chemically joined form what?
7nadin3 [17]

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compound

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When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

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3 years ago
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