PLEASE HELP!!!!!!!!!!!!

Chemistry

1 answer:

Nikitich [7]3 years ago

5 0

Answer:

1 : NA = 1 | 2 : N = 2 | 3 :

N = 1 | O = 5 |

O = 3 | |

Explanation:

im sorry but ion know the last one

You might be interested in

An atom has atomic number 5 and mass number 11. How many protons does the atom have? 5 6 10 11

spin [16.1K]

Answer:

6 neutrons. The mass number is the number of protons and neutrons in the nucleus of an atom. The atomic number shows how many protons. Subract the atomic number from the mass number to find the number of neutrons.

Explanation:

6 0

3 years ago

Read 2 more answers

Iupac name of h3C-C-Ch2-ch3

pshichka [43]

Answer:

The IUPAC name of given compound is 3−5−ethyl−5−−3−methylheptane. Explanation: The parental chain is of 7 carbons with single bonds hence it is heptane. Two substituents ethyl and methyl group are attached from an equal distance. Hence according to the alphabetical order preference, counting starts from carbon which is close to an ethyl group.

8 0

2 years ago

Determine the electrical work required to produce one mole of hydrogen in the electrolysis of liquid water at 298°K and 1 atm. T

Ostrovityanka [42]

Explanation:

The given data is as follows.

$\Delta H$ = 286 kJ = $286 kJ \times \frac{1000 J}{1 kJ}$