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Vedmedyk [2.9K]
3 years ago
6

What are collisions and combinationations of gas and matter called

Chemistry
1 answer:
REY [17]3 years ago
8 0
I would say Antimatter hoped I helped :)
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Which of these would be found in a wetland?
andrezito [222]

Answer:... in this set (11). Which type of wetland has large numbers of cattails and grasslike plants? ... Swamp. Mangrove trees would most likely be found in which wetland? ... spring rains. Sometimes called the "River of Grass," ---- is a vast wetland.

Explanation:

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4 0
3 years ago
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Which describes the polarity in a water molecule?
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7 0
4 years ago
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What volume of 12M HCI is needed to prepare 250<br> of 0.20M HCI?
Alchen [17]

Answer: 4.2

Explanation:

M_{A}V_{A}=M_{B}V_{B}\\(12)V_{A}=(250)(0.20)\\V_{A}=\frac{(250)(0.20)}{12}=\boxed{4.2}

6 0
2 years ago
How is the concentration of h3o ions and oh- ions different in an acid solution and a basic soulution?
Lubov Fominskaja [6]
In an acidic solution, the concentration of H+ is greater than the concentration of OH-. The pH will be less than 7.
In a basic solution, the concentration of OH- is greater than the concentration of H+. The pH will be greater than 7.
In a neutral solution, the concentration of H+ ions to OH-ions will be equal, and will therefore have a pH of 7. (This is due to water autoionization, which we usually ignore because it is small in other circumstances.)
5 0
3 years ago
A piece of an unknown substance weighing 124.0 grams is heated in boiling water to 100.0oc. when the substance is placed in a ca
MakcuM [25]

The heat cause 300g water temperature increase from 20 to 26 celcius. The heat transferred would be: 300g * (26 °C -20 °C) *4.2 joule/gram °C= 7560J

The unknown substance is added to the water, so its final temperature should be the same as the water. The calculation would be:

7560J= 124g * (100-26)* specific heat

specific heat= 7560J / 124g / 74 °C= 0.8238 J/gram °C

3 0
4 years ago
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