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fgiga [73]
3 years ago
5

Which are different forms of an element that have different numbers of neutrons?

Chemistry
1 answer:
kotykmax [81]3 years ago
5 0
When an element has a different number of neutrons, it’s called an isotope.
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(N2 &amp; O2 &amp; Ar &amp; CO2...) <br> an element compound or mixture?
ololo11 [35]

Answer: Mixture

Explanation:

Element is a pure substance which is composed of atoms of similar elements.

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air which conatins a mixture of N_2, O_2 , Ar and CO_2

8 0
3 years ago
at 100c the vapour pressure of a solution of 6.5g of solute in 100g of water is 732mm if kb is 0.52 k/m the boiling point of sol
sergey [27]

Answer:101.105⁰c

Explanation:

8 0
3 years ago
An instrument used to separate cell parts according to density is the
grigory [225]
It’s a centrifuger there are many steps to this do I advise looking on the internet or i could explain if needed
7 0
4 years ago
If 9.0g of water contain 1.0 g of hydrogen what mass of oxygen is contained in 36 g of water
Mazyrski [523]
9/1 ratio so 9:1=36:x
X is your hydrogen in the 36g sample. To find the mass of Oxygen you subtract the mass of hydrogen from the total.
4 grams H
36-4=32 g h2o
4 0
3 years ago
Which compound could serve as a reactant in a neutralization reaction ?
Veseljchak [2.6K]
 The   compound that  could serve  as  a reactant   in the neutralization reaction is    H2SO4
     
  Explanation
   Neutralization reaction occur  between an acids  and a base. H2SO4             (  sulfuric acid)  is  a strong  acid.  It can be neutralized by  strong base such as NaOH ( sodium  hydroxide)

  Example of neutralization reaction is

2NaOH + H2SO4 → Na2SO4  + 2H2O
7 0
3 years ago
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