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3 years ago

11

Plant and animal cells release energy stored in the bonds of glucose molecules when they perform _________. Question 1 options:

photosynthesis mitosis the Calvin cycle cellular respiration

2 answers:

STALIN [3.7K]3 years ago

8 0

the answer is cellular respiration

Dmitry_Shevchenko [17]3 years ago

3 0

Cellular respiration

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Which statement is correct about the rate of most chemical reactions? It increases when the concentration of reactants decreases

stiv31 [10]

Answer:

It increases when the temperature increases.

Explanation:

According to Arrhenius relation: k = Ae(-Ea/RT).

The rate constant of the reaction and also the rate of the reaction increases exponentially with increasing the temperature of the reaction.

As the temperature increases, the no. of molecules that can posses the critical energy (activation energy) to initiate the chemical reaction and pass the energy barrier increases.

7 0

3 years ago

2 Cu + Cl2 ----> 2 Cuci

s344n2d4d5 [400]

Answer:

320 g.

Explanation:

Hello!

In this case, according to the balanced chemical reaction, we can compute the grams of copper I chloride produced by each reactant, as shown below:

$m_{CuCl}^{by\ Cu}=3.23molCu*\frac{2molCuCl}{2molCu}*\frac{99.0gCuCl}{1molCuCl} =320gCuCl\\\\m_{CuCl}^{by\ Cl_2}=1.64molCl_2*\frac{2molCuCl}{1molCl_2}*\frac{99.0gCuCl}{1molCuCl} =325gCuCl$

Thus, since copper produces the fewest grams of CuCl, we infer it is the limiting reactant, therefore the correct mass of copper I chloride is 320 g.

Best regards!

4 0

3 years ago

The formula H2O2 is an example of *

saveliy_v [14]

Answer: Molecular formula

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Ionic formula is the simplest chemical formula which depicts the whole number of atoms of each element present in an ionic compound.

Molecular formula of hydrogen peroxide is $H_2O_2$ . Empirical formula of hydrogen peroxide is OH.

8 0

3 years ago

Describe at least two experiments, including the observed results, that caused the scientific community to accept changes to Dal

WINSTONCH [101]

The model after John Dalton's was J.J Thompson's plum podding model in 1897, which described electrons as dots or raisins(if you will) in a circle shaped pudding that was entirely positive using a Cathode Ray Tube(shot cathode rays between magnets). The model after that is the Niels Bohr model in 1913, which depicts atoms like positively charged center called the nucleus with negatively charged particles called electrons in a shell or cloud.

5 0

4 years ago

Less energy was entering Earth's

ololo11 [35]

Answer:

The temperatures on Earth increase

Explanation:

more energy results in more heat.

6 0

3 years ago