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Travka [436]
3 years ago
11

Respiration describes the process that living cells use to release energy by combining sugar and oxygen. The primary chemical ch

anges that happen during respiration are shown in the equation below.
C6H12O6 + 6O2 ---> 6CO2 + 6H2O + energy

Which statement correctly compares the reactants and products of the equation?
A.
The mass of the reactants is less than the mass of the products.
B.
The mass of the reactants is greater than the mass of the products.
C.
The mass of the reactants is the same as the mass of the products.
D.
The number of reactant molecules is greater than the number of products.
Chemistry
1 answer:
True [87]3 years ago
5 0

Answer:

C the mass of the reactant molecules is the same as the mass of the product

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When 25.0 grams of water are cooled from 20.0 degrees Celsius to 10.0 degrees Celsius the number of joules of heat energy releas
vodka [1.7K]

Heat energy released here

Q = mass x specific heat capacity of water x deltaT


= 25.0 x 4.184 x (-10.0)


= - 1046 Joules


1046 Joules of heat energy is released in this process.  




     

8 0
3 years ago
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A buffer is prepared by adding 18.0 g of sodium acetate (ch3coona to 510 ml of a 0.160 m acetic acid (ch3cooh solution. determin
Nutka1998 [239]
Given:

mass of sodium acetate = 18.0 grams
volume of acetic acid = 510 ml
concentration of acetic acid = 0.160 M

Solve for the ph of the buffer:

pH = pKa + log [salt]/[acid]

pKa of acetic acid = 4.76
M of sodium acetate = 82g/mol
pH = 4.76 + log [18g/82g/mol] / [0.160M*(510/1000)]
pH = 5.19


4 0
3 years ago
Help help help help help help help help help help
MAVERICK [17]

Answer:

this is very easy to solve

  1. (NH4)2 Co3,(NH4)2 So4,( NH4)3 Po4
  2. k2 co3, k2 so4,k3 Po4
  3. zn oh2, zn (No3)2, zn3 (Po4)
  4. ca oh2
  5. fe oh3, fe(No3)3, fe2 (co3)3, fe2 (so4)3

this is a answer I am very sure

6 0
3 years ago
Imagine that you have a partially inflated
nika2105 [10]

Answer:

The answer is A and D

Explanation: Sorry i know I'm late have a good day! :)

8 0
3 years ago
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A student touches a freshly baked cake that was taken out of the oven. Which best explains why the cake feels hot? Molecules in
almond37 [142]

Answer: Option (b) is the correct answer.

Explanation:

When the cake is baked then due to the heat provided to it there will occur movement of its molecules.

As a result, molecules will gain kinetic energy due to which there will occur collisions between them.

Also,       K.E \propto \frac{3}{2}kT

Hence, more is the heat provided to the cake more will be the kinetic energy of its molecules due to which when we touch it, it feels hot.

Thus, we can conclude that molecules in the cake are moving faster than molecules in the skin, best explains why the cake feels hot.

6 0
3 years ago
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