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mote1985 [20]
3 years ago
13

In order to start a class a fire you must have

Chemistry
2 answers:
Llana [10]3 years ago
7 0
Protective gear, a guardian or instructor, basic safety equipment

Readme [11.4K]3 years ago
3 0
Class A fires consist of ordinary combustibles such as wood, paper, fabric, plastic, and most kinds of trash.
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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
all matter has both physical and chemical properties. a physical property can be observed without changing the identity of the s
insens350 [35]
The Correct answer is A.
8 0
3 years ago
What is the mole ratio of water to H3PO4?
Artyom0805 [142]

Answer:

Explanation:

Phosphoric acid H₃PO₄ is produced from reaction of water and tetraphosphorus decoxide  P₄O₁₀ as follows

P₄O₁₀ + 6 H₂O = 4 H₃PO₄

In this reaction 6 molecules of H₂O and one molecule of  phosphorus compound P₄O₁₀ is needed to produce phosphoric acid , ie the conversion factor of water to acid is 6 / 1

This ratio is called mole ratio of water to H₃PO₄.

So the required ratio is 6 : 1 .

3 0
3 years ago
Calculate the number of moles in 32.0 g of methane, CH4, to 3 significant figures.
andrew11 [14]

Answer:

2 moles

Explanation:

mass of ch4 is 16 g/mol

32g

32g/16 g/mol =

32/16 =

2

6 0
3 years ago
Read 2 more answers
SOLVE Use the density formula to solve the following problems. A sample of a substance has a volume of 60.5 mL and a density of
Likurg_2 [28]
Density = Mass/Volume
Therefore, Mass = Density x Volume

So the mass of the sample is 1.20 g/mL x 60.5 mL = 72.6 g
5 0
4 years ago
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