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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.
You might be interested in
Under which conditions does a sample of the same mass of carbon dioxide have the lowest
hjlf
The answer is B, as a solid and a low temperature would result in the lowest entropy value
8 0
3 years ago
In which of the following choices is the oxidation number incorrect?
8_murik_8 [283]

Cl2(s); oxidation number 1 is the incorrect choices in oxidation number.

Explanation:

In the elemental form oxidation state is zero. Here chlorine is present in elemental form so oxidation state is zero.

Oxidation number depends on the number of electrons gained or lost by an atom of the element say in compound formation.

If electron is gained oxidation number becomes negative.

If electron is lost then oxidation number is positive.

If the octet rule is fulfilled that valence shell is filled them atomic number gets zero. Since Cl2 is in neutral state the oxidation number is 0.

Oxidation number in general can be made out by checking the valency of the element as oxidation number is also equal to the valency.

4 0
3 years ago
five atoms of hydrogen are reactants in a chemical reaction. how many atoms of hydrogen will be found in the products of that re
Mkey [24]

Answer:

5 atoms of hydrogen will be found in the products

Explanation:

5 atoms of hydrogen will be found in the products becuase the law of conservation of mass states that mass is neither created nor destroyed in chemical reactions.

6 0
3 years ago
Calculate the grams of so2 gas present at stp in a 5.9 l container.
nata0808 [166]

<u>Answer:</u> The mass of sulfur dioxide gas at STP for given amount is 16.8 g

<u>Explanation:</u>

At STP conditions:

22.4 L of volume is occupied by 1 mole of a gas.

So, 5.9 L of volume will be occupied by = \frac{1mol}{22.4L}\times 5.9L=0.263mol

Now, to calculate the mass of a substance, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of sulfur dioxide gas = 0.263 mol

Molar mass of sulfur dioxide gas = 64 g/mol

Putting values in above equation, we get:

0.263mol=\frac{\text{Mass of sulfur dioxide gas}}{64g/mol}\\\\\text{Mass of sulfur dioxide gas}=(0.263mol\times 64g/mol)=16.8g

Hence, the mass of sulfur dioxide gas at STP for given amount is 16.8 g

7 0
3 years ago
One success of Johann Döbereiner's law of triads was that it organized most of the known elements into three-element groups base
jenyasd209 [6]
That statement is true

it was easy to organize 'all' the elements in a group of threes because back then they only knew about 15 - 20 elements

hope this helps
4 0
3 years ago
Read 2 more answers
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