Chemistry, 02.07.2019 09:20 dummyboi57

An element has an atomic number of 76. the number of protons and electrons in a neutral atom of the element are a. 152 protons and 76 electrons c. 38 protons and 38 electrons b. 76 protons and 0 electrons d. 76 protons and 76 electrons

Answers: 1

Show answers

Answers

Answer from: Lonzo2

The correct answer is D. 76 protons and 76 electrons.

Explanation

The atomic number is a term used in physics and chemistry to refer to the structure of the atoms of each element. This number indicates the total number of protons (positive charges) in the nucleus of an atom. It is usually represented by the letter Z. Usually, the atoms in their natural state are neutral, this means that their number of electrons (negative charge) and protons are equal, for example, an iron atom (Fe), has an atomic number of 26, It has 26 electrons and 26 protons. Therefore, a neutral atom of the element with an atomic number of 76, has 76 protons and 76 neutrons. So, the correct answer is D. 76 protons and 76 electrons.

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

Answer from: Quest

jjj89t'ji; it hink the answer is your mom is not si

Another question on Chemistry

Chemistry, 21.06.2019 21:00

How are elements arranged in a periodic table

Answers: 2

Answer

Chemistry, 22.06.2019 06:40

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Answers: 3

Answer

Chemistry, 22.06.2019 17:30

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

Answers: 2

Answer

Chemistry, 22.06.2019 19:00

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²

Answers: 2

Answer

You know the right answer?

An element has an atomic number of 76. the number of protons and electrons in a neutral atom of the...

Questions