He is incorrect because a catalyst is a substance that speeds up a chemical reaction so if there is no reaction to begin with a catalyst will not due anything.

5 0

3 years ago

Which of the following is the correct order in a food chain?

Kamila [148]

Answer:

2/3 of the students in a class are girls. if there are 20 boys in the class. then the totoal number of girls isthe length of abhishek's notebook is 17cm and 8 mm. What will be its length in cma fraction has no2/3 of the students in a class are girls. if there are 20 boys in the class. then the totoal number of girls isthe length of abhishek's notebook is 17cm and 8 mm. What will be its length in cm

6 0

3 years ago

The mass of an electron is

vodka [1.7K]

Answer:

not significant to the overall mass of the atom

Explanation:

The mass number of an atom is the combination of the mass of the protons and neutrons. Electrons are not included because their mass are so insignificant that is doesn't change the total mass much, therefore they are left out. The mass of an electron is about 1,830 times smaller than protons and neutrons.

4 0

3 years ago

In comparing the five-kingdom system of classification with the six-kingdom system, all ___________ are grouped in one kingdom i

lana66690 [7]

the answer is Bacteria

6 0

3 years ago