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Marat540 [252]
2 years ago
8

The beginning of this chemical equation represents the

Chemistry
2 answers:
tresset_1 [31]2 years ago
7 0

Answer:

cccccccccc

Explanation:

katovenus [111]2 years ago
5 0

Answer:

C. H₂SO₄

Explanation:

   Given expression:

         H₂O + SO₃  →   H₂SO₄

In the chemical reaction, the product and the reactant have the same species.

Chemical reactions obeys the law of conservation of matter.

This way, atoms combine with one another to give a desired product. The products will contain a mix of the reactants.

  • Fluorine is not part of the reactants
  • Carbon is not part of the reactants
  • Carbon is not part of the reactants.
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Why is it important for scientists to use the scientific method?
shtirl [24]
I believe the answer is A
3 0
2 years ago
A 0.211 g sample of carbon dioxide, CO2, has a volume of 560 mL and a pressure of 429 mmHg whats the temperature of the gas in K
SCORPION-xisa [38]

The temperature of the gas sample is 813 K.

<u>Explanation:</u>

We have to use the ideal gas equation to find the temperature of the gas sample.

The ideal gas equation is PV = nRT

Pressure, P = 429 mm Hg = 0.56 atm

Volume, V = 560 mL = 0.56 L

R = gas constant = 0.08205 L atm mol⁻¹K⁻¹

Mass = 0.211 g

Molar mass of carbon di oxide = 44.01 g / mol

Moles, n = $\frac{given mass}{molar mass} = \frac{0.211 g}{44.01 g/mol}

              = 0.0047 mol

Now, we have to plugin the above values in the above equation, we will get the temperature as,

$T= \frac{PV}{nR}

T = $\frac{0.56  \times 0.56}{0.08205 \times 0.0047}

 = 813 K

So the temperature of the gas sample is 813 K.

5 0
3 years ago
Which of the following most likely happens during a chemical change?
tigry1 [53]

The answer is the last option.

4 0
2 years ago
How is the mode of a data set defined?
Whitepunk [10]
<span> It is the most common value in the set.</span>
7 0
2 years ago
Read 2 more answers
All elements have same number of valence electrons and similar properties
Yanka [14]

Answer:

Groups

Explanation:

Groups(row going up and down) All have the same amount of valence electrons) Ex: First group the alkali metals all have 1 valence electron and are all very highly reactive.

The only ones that this rule does not work for is the smaller column in the middle called transitional metals and the amount of valence electron that each one has differs

6 0
3 years ago
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