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GalinKa [24]
3 years ago
5

a nickel atom (atomic symbol Ni) has an atomic number of 28 and has an atomic mass of 59. how many neutrons does it have ??

Chemistry
1 answer:
shusha [124]3 years ago
8 0

Answer: 31 neutrons

Explanation:

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From carbon dioxide, hydrogen, maltose, and ammonia which one is the largest
ollegr [7]

Explanation:

maltose is your answer

hope it's helpful for you

4 0
3 years ago
a paper clip has a length of 32.3mm. how many paper clips would you need to form a line of paper clips to cover a distance of 1.
nasty-shy [4]

Answer:

89883 paper clips

Explanation:

To solve this problem you need to use conversion factors to work with the same units.

First you should convert 32.3mm to miles:

32.3mm*\frac{6.2*10^{-7}}{1000mm}=2*10^{-5}miles

Then you should divide the total distance between the length of a paper clip in miles, so:

\frac{1.8miles}{2*10^{-5}miles}=89883paperclips

6 0
3 years ago
Balance the equation ___Fe+__O2–>___Fe2O3
Sever21 [200]

Answer:

4 Fe + 3 O2 = 2 Fe2O3

Explanation:

In order to balance the equation, there should be equal number of iron atoms (Fe) and oxygen atoms (O2) in Iron(III) oxide (Fe2O3).

Since there are two atoms of Oxygen in 1 oxygen molecule and 3 atoms of Oxygen in 1 Iron Oxide, the least common multiples of the total oxygen atoms which would equal each other is 6 atoms of Oxygen. This results in 3 molecules of O2 and 2 molecules of Fe2O3.

In order to balance out the amount of iron in iron oxide, you must then calculate the total iron atoms in iron oxide; since there are 2 atoms of Fe in each molecule of Iron Oxide and there is 2 molecules of Fe2O3, the total is 2*2 = 4 atoms of iron, Fe.

In order to get 4 atoms of iron from molecules of Fe, you need 4 molecules of Fe, since each molecule contains 1 Fe.

5 0
3 years ago
Angela does 50 Joules of work to lift her 2.5 kg grocery bag. How far (distance) did she lift the grocery bags?
levacccp [35]
If:

work done = force x distance

distance = work done ÷ force

so:

50 ÷ 2.5 = 20m
8 0
3 years ago
1. Choose the alkyl halide(s) from the following list of C6H13Br isomers that meet each criterion below. 1) 1-bromohexane 2) 3-b
Vika [28.1K]

Answer:

See explanation

Explanation:

the compound that gives the fastest SN2 reaction with sodium methoxide- 1-bromohexane

the compound that gives the fastest SN1 reaction- 3-bromo-3-methylpentane

the compound(s) that undergo an SN1 reaction to give rearranged products- 1-bromo-2,2-dimethylbutane

the compound that is least reactive to sodium methoxide in methanol -

3-bromo-3-methylpentane

the compound(s) that can exist as diastereomers - 3-bromo-3-methylpentane

the compound(s) that can exist as enantiomers- 3-bromo-2-methylpentane

6 0
3 years ago
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