Answer:
Explanation:
The rate of the forward reaction is less than the rate of the reverse reaction. ... The reaction rates of the forward and reverse reactions are equal
Answer:
Dalton's atomic theory consisted of several postulates.
Explanation:
<span><span>
All matter consists of indivisible particles called atoms.
</span><span>
Atoms of the same element are similar in shape and mass, but differ from the atoms of other elements.
</span><span>
Atoms cannot be created or destroyed.
</span><span>
Atoms of different elements may combine with each other in a fixed, simple, whole number ratio to form compound atoms.
</span><span>
Atoms of same element can combine in more than one ratio to form two or more compounds.
</span><span>
Atoms are the smallest unit of matter that can take part in a chemical reaction.
</span></span>
You would do 82.75 divided by 125 cm3 and get 0.6620 g/cm3 because to find density you mist divide mass and volume and grams is always mass and cm3 or mL is always volume. hope i helped!
•The atomic number of an atom is the number of protons it has. If the atomic number is 20 then we know the atom has 20 protons.
•The mass number of an atom is the total number of protons and neutrons the atom contains. The mass number is 41 and the number of protons is 20, just subtract 20 from 41 and you will get the number of neutrons: 41 - 20= 21. The atoms has 21 neutrons.
•The number of electrons found in an atom is equal to the number of protons. The atoms has 20 protons which means it has 20 electrons.
So, the answer is:
B) 20 protons, 20 electrons, and 21 neutrons
