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klio [65]
2 years ago
15

During photosynthesis, light energy from the Sun causes a reaction to take place. The products of photosynthesis are used in a r

eaction during the process of cellular respiration, which provides energy for cell processes.
Identify which reaction absorbs energy and which reaction releases energy.​
Chemistry
1 answer:
andrew11 [14]2 years ago
3 0

Answer:

chemical reactions which proceed with the release of heat energy are called exothermic reactions

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kotegsom [21]
A catalyst speeds up the rate of reaction so the answer is B.
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3 years ago
A 0.245-L flask contains 0.467 mol co2 at 159 °c. Calculate the pressure using the ideal gas law.
lubasha [3.4K]

Answer:

Pressure, P = 67.57 atm

Explanation:

<u>Given the following data;</u>

  • Volume = 0.245 L
  • Number of moles = 0.467 moles
  • Temperature = 159°C
  • Ideal gas constant, R = 0.08206 L·atm/mol·K

<u>Conversion:</u>

We would convert the value of the temperature in Celsius to Kelvin.

T = 273 + °C

T = 273 + 159

T = 432 Kelvin

To find the pressure of the gas, we would use the ideal gas law;

PV = nRT

Where;

  • P is the pressure.
  • V is the volume.
  • n is the number of moles of substance.
  • R is the ideal gas constant.
  • T is the temperature.

Making P the subject of formula, we have;

P = \frac {nRT}{V}

Substituting into the formula, we have;

P = \frac {0.467*0.08206*432}{0.245}

P = \frac {16.5551}{0.245}

<em>Pressure, P = 67.57 atm</em>

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3 years ago
PEOPLE WHO BUY GOODS AND SERVICES ARE OF GROUP OF DECSION MAKERS CALLED?
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Choose the answer that best explains why α–pyrone reacts with br2 to yield a substitution product (like benzene does), rather th
meriva

As can be seen in the attached image, α-pyrone has a highly electrophilic carbon atom, since it is attached to two oxygen atoms that are electronegative and subtract electrical charge from the carbon, leaving it with a <u>positive partial charge</u>. By virtue of the above, <u>the bromine atoms, which have an important electron density that makes them good nucleophiles, will be attracted to the aforementioned carbon due to their positive charge</u>, thus favoring the substitution product to a greater extent than that of addition.

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Calculate the mass in grams of 4.69×1024 molecules of methanol.
Vladimir [108]

Answer:

4802.56

Explanation:

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