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icang [17]
2 years ago
12

How might differences in the volumes of individual reactants applied in a test influence a

Chemistry
1 answer:
Kay [80]2 years ago
3 0

Converting the number of reactants affects the number of products produced in a chemical reaction. In a chemical reaction, the most effective atoms present in the reactants can come to be in the products. Mass is conserved in a chemical response.

If the floor area to volume ratio of a reacting stable is progressed: more reactant particles are uncovered on the ground. the frequency of collisions amongst reactant debris will increase. consequently, the rate of reaction will grow.

Catalysts always accelerate a chemical change. they're materials that participate in a chemical response by increasing the price of response however are unchanged via the reaction itself. Growing the eye of 1 or more reactants will frequently boom the charge of the response. This takes place due to the fact a higher interest in a reactant will motivate greater collisions of that reactant in a selected time period.

Learn more about chemical change here:-brainly.com/question/1222323

#SPJ9

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A copper coin with a mass of 6.30 grams changes temperature in the sunshine from 20.0°C to 32.0°C. How much energy is transferre
mote1985 [20]

Answer:

The energy transferred is  28.5  j

calculation

energy is calculate  MCΔT  formula  where,

M(mass)= 6.30  grams

C(specific heat capacity)= 0.377 j/g

ΔT(change in temperature)= 32.0c- 20 c= 12 c

Energy is therefore= 6.30 g   x 0.377  j/g /c x   12 c =28.5 j

4 0
3 years ago
How many atoms of He are in 5.69 grams?
vfiekz [6]

Answer:

ejdkcndnxk

Explanation:

cnc dkxkcndndmskckf

6 0
3 years ago
The gas SF6 is used to trace air flows because it is non-toxic and can be detected selectively in air at a concentration of 1.0
melomori [17]

SF₆ in the air at a concentration of 1.0 ppb, exerts a partial pressure of 1.0 × 10⁻⁹ atm. At this concentration, 2.3 × 10¹⁰ molecules of SF₆ are contained in 1.0 cm³ of air at 46 °C.

First, we will calculate the partial pressure of SF₆  using the following expression.

pSF_6 = P \times \frac{ppb}{10^{9} }

where,

  • pSF₆: partial pressure of SF₆
  • P: total pressure of air (we will assume it is 1 atm)
  • ppb: concentration of SF₆ in parts per billion

pSF_6 = P \times \frac{ppb}{10^{9} } = 1 atm \times \frac{1.0 ppb}{10^{9} } = 1.0 \times 10^{-9} atm

Then, we will convert 1.0 cm³ to L using the following conversion factors:

  • 1 cm³ = 1 mL
  • 1 L = 1000 mL

1.0 cm^{3} \times \frac{1mL}{1cm^{3}} \times \frac{1L}{1000 mL} = 1.0 \times 10^{-3} L

Next, we will convert 46 °C to Kelvin using the following expression.

K = \° C + 273.15 = 46 + 273.15 = 319 K

Afterward, we calculate the moles (n) of sulfur hexafluoride using the ideal gas equation.

P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T}  = \frac{1.0 \times 10^{-9} atm  \times 1.0 \times 10^{-3} L}{(0.082 atm.L/mol.K) \times 319 K} = 3.8 \times 10^{-14} mol

Finally, we will convert 3.8 × 10⁻¹⁴ mol to molecules using Avogadro's number.

3.8 \times 10^{-14} mol \times \frac{6.02 \times 10^{23} molecules  }{mol} = 2.3 \times 10^{10} molecules

SF₆ in the air at a concentration of 1.0 ppb, exerts a partial pressure of 1.0 × 10⁻⁹ atm. At this concentration, 2.3 × 10¹⁰ molecules of SF₆ are contained in 1.0 cm³ of air at 46 °C.

You can learn more about partial pressure here: brainly.com/question/13199169

6 0
3 years ago
Si la mezcla de agua,arena, aceite, sal, jarabe y cerveza se separa por los métodos de: Filtración, decantación y destilación ¿C
ch4aika [34]

Answer: the answer is B

Explanation:

3 0
3 years ago
Read 2 more answers
A given substance is a white solid at 250C. It melts at 1500C without decomposing, and the melt does not conduct an electric cur
joja [24]

Answer:

The substance can be best classified as a molecular substance

Explanation:

The given information are;

The physical state of the substance at 25°C = Solid state

The physical state of the substance at 150°C = Molten

Molecular substances are those with bonds formed by electron sharing among the constituent atoms and they contain a few number of atoms per molecule. Molecular compounds with molecular weight less than 100, usually exist as liquids or gases at room temperature, while those with molecular weights over 100 can be found in a solid state at room temperature.

Generally, molecular compounds are usually volatile and have a melting point less than 300°C

Therefore, the substance can be best classified as a molecular substance.

5 0
3 years ago
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