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spayn [35]
3 years ago
6

The chemical reaction that occurs when a mixture of gasoline and air is ignited by a spark is called a __ A. combustion reaction

Chemistry
2 answers:
trasher [3.6K]3 years ago
4 0
A. Combustion Reaction
s2008m [1.1K]3 years ago
4 0

Answer: Combustion

Explanation:

A. Combustion is a type of chemical reaction in which fuel such as gasoline (which is a mixture of hydrocarbons) is reacted with oxygen to form carbon dioxide and water.

Example:  

CH_4+2O_2 \rightarrow CO_2+2H_2O

B. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: Zn+2HCl\rightarrow ZnCl_2+H_2

D. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: Li_2CO_3\rightarrow Li_2O+CO_2

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Which of the following is NOT a variable property for a gas?
Alex_Xolod [135]
Mass, air has that. Since what fills up a balloon? A gas
Shape, it has no definite shape. This one is accurate, it has no definite shape, it takes the shape of the object it's in.
Volume, does air take up space? If it does then yep. Balloon example/
Density, yes it does, because it's tightly wounded up.

D
5 0
4 years ago
Read 2 more answers
How many moles of ammonia are in 735. mL of a 4.25 M aqueous ammonia solution?
zysi [14]

Answer:

*moles = molarity(M=moles/L) * volume (L)

so, you have 4.25 * 0.735 moles

*NH3

* M=n/v

*To determine the number of significant figures in a number use the following 3 rules: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant.

6 0
3 years ago
Natural gas is a mixture of many substances, primarily CH₄, C₂H₆, C3H8, and C4₄H₁₀. assuming that the total pressure of the gase
olchik [2.2K]

Answer:

A. The partial pressure for CH4 = 0.0925atm

B. The partial pressure for C2H6 = 0.925atm

C. The partial pressure for C3H8 = 0.346atm

D. The partial pressure for C4H10 = 0.115atm

Explanation:

Total pressure = 1.48atm

Total mole = 0.4+4+1.5+0.5=6.4

A. Mole fraction of CH4 = 0.4/6.4 = 0.0625

The partial pressure for CH4 = 0.0625 x 1.48 = 0.0925atm

B. Mole fraction of C2H6 = 4/6.4 = 0.625

The partial pressure for C2H6 = 0.625 x 1.48 = 0.925atm

C. Mole fraction of C3H8 = 1.5/6.4 = 0.234

The partial pressure for C3H8 = 0.234 x 1.48 = 0.346atm

D. Mole fraction of C4H10 = 0.5/6.4 = 0.078

The partial pressure for C4H10 = 0.078 x 1.48 = 0.115atm

7 0
3 years ago
Yes carbohydrates have both monomers and polymers. Monomers of carbohydrates are monosaccharides (mono- one; saccharide- sugar)
GenaCL600 [577]

Answer:

Ok. so what's the question .-.

Explanation:

4 0
3 years ago
Read 2 more answers
For a reaction: aA → Products, [A]o -4.3 M, and the first two half-lives are 56 and 28 minutes, respectively. Calculate k (witho
Mkey [24]

Answer:

C.3.8\times 10^{-2}

Explanation:

We are given that

Initial concentration, [A]_o=4.3 M

First half life, t_{\frac{1}{2}}=56minutes

Second half life, t'_{\frac{1}{2}}=28minutes

We have to find K.

The given reaction is zero order reaction.

We know that for zero order reaction

t_{\frac{1}{2}}=\frac{[A]_o}{2k}

Using the formula

56=\frac{4.3}{2k}

k=\frac{4.3}{2\times 56}

k=3.8\times 10^{-2}

Hence, option C is correct.

4 0
3 years ago
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