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Vedmedyk [2.9K]
3 years ago
8

Can someone answer all 3 questions plz?

Chemistry
1 answer:
nordsb [41]3 years ago
3 0

Question one should be obvious..

Mass can't be created not destroyed no matter what, so even in a chemical reaction, the answer will remain. The first answer is correct.

Question two

No, because even when water is broken down, there should only be one molecule of oxygen. The fact there is two means it's incorrect.

Question three

Yes. The equation is perfectly balanced on both sides, so it's safe to say the value of mass remains constant.

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Please select the word from the list that best fits the definition<br><br> The energy of motion
ss7ja [257]

Answer:

Kinetic energy

Explanation:

Objects or particles under motion posses energy in the form of kinetic energy which is directly proportional to the square of the velocity of the given particle.

E= 1/2mv² where m is the mass of the particle and v the velocity of the particle.

3 0
3 years ago
Which element requires the least amount of energy to remove the outer-most electron from a gaseous atom in the ground state?
dsp73
<span>the element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the ground state is  s</span><span>odium</span>
8 0
3 years ago
Read 2 more answers
I need help with this question
Maru [420]

Aluminum sulfide : Al₂S₃

ratio cation : anion = 2 : 3

<h3>Further explanation</h3>

Given

Compound of Aluminium

Required

cations anions ratio

Solution

Salt can be formed from cations and anions which have their respective charges.

In the chemical compound formula these charges are crossed with each other

For aluminum it has a +3 charge

1. Aluminum carbide : Al₄C₃

ratio cation : anion = 4 : 3

2. Aluminum chloride : AlCl₃

ratio cation : anion = 1 : 3

3. Aluminum sulfide : Al₂S₃

ratio cation : anion = 2 : 3

4. Aluminum nitride : AlN

ratio cation : anion = 1 : 1

3 0
3 years ago
Dan bikes 10 km west and then bikes another 5 km west. What is Dan's
777dan777 [17]
C

This is because 10+5=15
15/45=0.3
4 0
3 years ago
which of the following lewis diagrams best represents the bonding in the N2O molecule, considering formal charges? justify your
avanturin [10]

The best diagram to represent N2O is the second diagram.

The Lewis diagram is used to represent the way two or more atoms bond. This is possible by using lines to represent bonds and dots to represent electrons.

In the case of the molecule N2O bonding occurs in the following way:

  • A triple bond is formed between the nitrogen atoms, which means,  in the Lewis diagram the nitrogen atoms are connected with three lines.
  • The oxygen atom connects to one of the nitrogen atoms.
  • The nitrogen atom that is not connected to the oxygen will have 2 electrons represented by dots because the number of valence electrons is 5, but three were used in the triple bond.
  • The oxygen atom will have 6 electrons represented by dots, which are equal to the number of valence electrons.

Learn more about Lewis diagram in: brainly.com/question/9436176

8 0
3 years ago
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