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ANTONII [103]
3 years ago
14

A material was cooled from 100°C to 40°C. What is the temperature change?

Chemistry
1 answer:
vazorg [7]3 years ago
8 0
The answers D) -60
Just subtract
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Describe the evidence of changes in organisms in the Cambrian Era that are reflected in the fossil record.​
UkoKoshka [18]

Answer:

Morphology and phylogenetics revealed by fossils. Perhaps the strongest evidence to support the Cambrian evolutionary explosion of animal forms is the first clear appearance, in the Early Cambrian, of skeletal fossils representing members of many marine bilaterian animal phyla

Explanation:

also pls vote brainliest <3 :)))

3 0
2 years ago
What pressure is required to reduce 40 ml of a gas at standard conditions to 20 ml at a temperature of 21?c? answer in units of
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4 0
3 years ago
Predict the products and write balanced net ionic equations for the following reactions. (g) SnCl2 is added to KMnO4 solution (a
ch4aika [34]

Answer:

The answer to your question is:

Explanation:

Reaction

                  SnCl₂    +    2KMnO₄     ⇒    2 KCl     +    Sn(MnO₄)₂

                                               1 ----   Sn ----  1

                                               2 ----   K  ----- 2

                                               2 ----  Mn ----  2

                                               8 ----    O ----  8

                                               2 ----   Cl ----  2

6 0
3 years ago
If the frequency 38 Hz and the wavelength 20m what is the wave speed in Science
Akimi4 [234]
Answer: 20*38
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7 0
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The major reason for chemical bonding is _____.. . . for atoms to gain the stability of the octet. to form a substance in low su
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In my opinion, the best answer among the choices listed above is the first option. The major reason for chemical bonding is <span>for atoms to gain the stability of the octet. In general, chemical reactions happen in order for substances achieve stability or appropriately achieve equilibrium.</span>
7 0
3 years ago
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