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Grace [21]
3 years ago
7

Name two different signs of a chemical reaction

Chemistry
2 answers:
olasank [31]3 years ago
7 0
A change in temperature or color are two signs that a chemical reaction has taken place.
xenn [34]3 years ago
4 0
Color or the way it looks
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3 years ago
Sometimes a cloud may form at or near the ground when the ground cools at night. This cloud is known as...
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Y-Chart<br> Explain how an invasive species can influence each aspect of an ecosystem.
Katen [24]

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Invasive species are an organism that causes ecological or economic harm in a new environment where it's not native.

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An invasive species can harm both the natural resources in the ecosystem as well it threaten the human use of these resources and invasive species can be introduced to a new area via the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and etc.

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I hope it helps you.

6 0
4 years ago
How many Hydrogen atoms are in 4HN₃?
Kazeer [188]
4 Hydrogen Atoms should be correct. Because the 4 infront of it signifies the amount of hydrogen. It would also be 4 hydrogen atoms if it were written as H4N3, because the 4 is still around the H (as long as the 4 is under scored)
6 0
2 years ago
A mixture of three gases has a total pressure of 365 mmHg. Gas A contributes a pressure of 53 mmHg and gas B contributes a press
adoni [48]
This one is the easiest law, but you would take 53 and 185 and add them together to get 235 and then you will minus 235 and 365 and the answer you are looking for is 130 mmHg! Hopefully this helped you!!

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