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Jet001 [13]
4 years ago
11

Which statement about activation energy is true? a. It is not affected by catalysts. b. It has no effect on the rate of the reac

tion. c. It is the energy required to break existing chemical bonds. d. It is the same for all reactants.
Chemistry
2 answers:
TiliK225 [7]4 years ago
8 0
C. the energry required to break existing chemical bonds
Vsevolod [243]4 years ago
3 0
Activation energy is the term coined by the Swedish scientist Svante Arrhenius on 1889. The term is used to refer or describe the minimum energy which must be available for the system of chemicals to have a chemical reaction. Hence, the answer to the question is letter "C. It is the energy required to break existing chemical bonds". 
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If fahrenhite is 200 then what is the reading of celsius​
sineoko [7]
  • Given Temperature=200°F

\\ \bull\tt\longmapsto F=\dfrac{9}{5}C+32

\\ \bull\tt\longmapsto 200=\dfrac{9}{5}C+32

\\ \bull\tt\longmapsto \dfrac{9}{5}C=200-32

\\ \bull\tt\longmapsto \dfrac{9}{5}C=168

\\ \bull\tt\longmapsto C=\dfrac{5}{9}\times 168

\\ \bull\tt\longmapsto C=5(18.2)

\\ \bull\tt\longmapsto C=36.4°C

8 0
3 years ago
Read 2 more answers
What is an alkali metal with fewer than 10 protons in its nucleus?
Trava [24]

Answer:

            Lithium

Explanation:

                  Alkali metals are group of metals which are present in first group of periodic table. As we know atomic number is equal to number of protons contained by a particular element. Therefore, the alkali metals along with there number of protons are listed below;

Alkali Metal                                         Number of Protons

Lithium                                                               3

Sodium                                                             11

Potassium                                                         19

Rubidium                                                         37

Cesium                                                             55

Francium                                                          87

Hence, it is cleared from above table that Lithium is having fewer protons than 10.

6 0
3 years ago
Given the following isotopes of strontium, calculate the average atomic mass.
vodka [1.7K]

Answer:

87.5198

Explanation:

(43.65 * 87.05) + (48.25 * 87.93) + (8.11 * 87.50) = 8751.98

8751.98 / 100 = 87.5198

3 0
3 years ago
A covalent bond forms a(n) ______________.
DiKsa [7]
The answer is Molecule. After a pair of shared electrons orbit around the nuclei of both atoms
3 0
3 years ago
Read 2 more answers
15 points + brainliest pls help :(
Komok [63]

Answer:

27 g

Explanation:

M(C6H12O6) = 6*12 + 12*1 + 6*16 = 180 g/mol

100 mL = 0.1 L solution

1.5 M = 1.5 mol/L

1.5 mol/L * 0.1 L = 0.15 mol  C6H12O6

0.15 mol * 180 g/1 mol = 27 g C6H12O6

6 0
3 years ago
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