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KiRa [710]
3 years ago
7

35⋅34 9/20 4/10 4/5 5/4

Chemistry
1 answer:
Digiron [165]3 years ago
6 0

Answer:

1 por 10 y otro por el culo

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ziro4ka [17]

Answer:

b

Explanation:

8 0
3 years ago
1. write the complete chemical symbol for the ion with 14 protons 15 neutrons and 18 electrons
motikmotik

Answer:

1.   Si^{-4}

2.  Co^{+2}

Explanation:

An ion is formed when an atom that is said to be neutral gains or losses electrons.

It is thought that a negative ion (anion) is produced as it gains electrons and a positive ion (cation) is formed when it loses an electron.

Atomic number is the total number of protons and electrons in a neutral atom.

From the information

Protons = 14

electron = 18

Net Charge = no of proton - no of electron

= 14 - 18 = -4

Mass number = 14 + 15 = 29

Thus, the chemical symbol = Si^{-4}

For ion with 27 proton, 32 neutrons and 25 electrons

Net charge = 27 - 25 = +2

Mass number = 27 + 32 = 59

Thus, the chemical symbol = Co^{+2}

6 0
2 years ago
Which of the following is a measure of velocity?
padilas [110]

The correct answer is 30 seconds

6 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP
sashaice [31]

Answer:

put a salt into the beakers

3 0
3 years ago
Read 2 more answers
If 0.959J of heat is added to 0.88g of water, how much will its temperature increase
ss7ja [257]

Answer:

0.260 Celsius

Explanation:

q =c x m x (T2-T1)

c - specific heat of water 4.186 J/g.C

T2-T1 = q /(c x m) = 0.959 /(4.186 x 0.88) = 0.959/3.68 =0.260 C

7 0
2 years ago
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