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Lostsunrise [7]
3 years ago
9

What must be true about the matter at the start of a fire versus the end?

Chemistry
1 answer:
quester [9]3 years ago
5 0

Explanation:

Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen. There must be Heat (ignition temperature) to start and continue the combustion process.

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What is the SI unit for the mass of subatomic particles?
gogolik [260]

<em>hey, im jordan :)</em>

the SI unit for the mass of subatomic particles is <u>amu (atomic mass unit)</u>

<em>hope this helps!</em>

<em>have a great day :D</em>

4 0
3 years ago
Explain the process of groundwater
Anon25 [30]

Answer:

Limestone is easily eroded from above and below.

Explanation:

The Florida bedrock is largely made of limestone. Because limestone is a rock that is easily eroded, the landscape of a great part of Florida is classified as karstic.

Karstic landscapes are dotted by sinkholes, underground rivers, caves, and springs. The more acidic the groundwater or rainwater, the faster and more easily the limestone will succumb to erosion.

In this way, underground rivers, streams, runoff, rain, and underground water pooled in caves have all carved out gaps and caverns in the weak limestone bedrock.

3 0
3 years ago
Boyle's Law represents the relationship of volume as pressure changes. The constants of Boyle's Law are:
Aleksandr [31]

Answer:

d. Temperature and number of molecules of gas  

Step-by-step explanation:

Boyle's Law states, "The volume of a fixed mass of a gas is inversely proportional to the pressure if the temperature remains constant."

Let's examine the words.

"… volume…is inversely proportional to the pressure …" This means that volume and pressure are the <em>variables</em>.

"… fixed mass of a gas …" means that the number of molecules is constant.

"… temperature remains constant" speaks for itself.

a, c, and e are <em>wrong</em>, because pressure is a variable.

b is <em>wrong</em>, because volume is a variable.

5 0
3 years ago
A solution contains 11% by mass of sodium chloride. this means that __________.
d1i1m1o1n [39]

As a solution is contained with 11% by mass of sodium chloride, this will therefore conclude that the 100g of the solution is composed of the 11g of the sodium chloride. In which, the correct answer would be specified as letter c.

5 0
3 years ago
250 kilograms is how many pounds?
Kruka [31]

Answer:

250 Kg = 551.155655 lb

Explanation:

6 0
3 years ago
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