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3 years ago

What is an isotope? list the isotopes of hydrogen in order from lighter to heavier. which is the most common among them?

1 answer:

6 0

Isotopes= a group of atoms with the same no. of protons , but different no. of neutrons

Hydrogen isotopes

$^1H\implies ^2H\implies ^3H$

The name of the second isotope is deuterium and the name of the third isotope is tritium(radioactive).The most abundant isotope is $^1H$

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As5F10 compound name

Veseljchak [2.6K]

Pentaarsenic decafluoride
Penta=5
Arsenic=As
Deca=10
Fluoride=F
Drop the -ine and add -ide

6 0

3 years ago

What is freshly pumped oil called?

algol13

Answer:

When the drill hits oil, some of the oil rises from the ground high into the air. This immediate release of oil is known as a "gusher." Once a reservoir has been located, pumps are used to extract the oil.

7 0

2 years ago

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You perform a distillation to separate a mixture of propylbenzene and cyclohexane, and you obtain 2.9949 grams of cyclohexane (d

Romashka-Z-Leto [24]

Answer:

66.67%

Explanation:

From the given information:

mass of cyclohexane = 2.9949 grams

density of cyclohexane = 0.779 g/mL

Recall that:

Density = mass/volume

∴

Volume = mass/density

So, the volume of cyclohexane = 2.9949 g/ 0.779 g/mL

= 3.8445 mL

Also,

mass of propylbenzene = 1.6575 grams

density of propylbenzene = 0.862 g/mL

Volume of propylbenzene = 1.6575 g/ 0.862 g/mL

= 1.9229 mL

The volume % composition of cyclohexane from the mixture is:

$= (\dfrac{v_{cyclohexane}}{v_{cyclohexane}+v_{propylbenzene}})\times 100$

$= (\dfrac{3.8445}{3.8445+1.9229})\times 100$

$= (\dfrac{3.8445}{5.7674})\times 100$

= 66.67%

6 0

2 years ago

Which of the following is an example of a negative tropism?

salantis [7]

C—stems and leaves growing upward?

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3 years ago

Which statement describes a system that consists of sugar crystals dissolving in water?

trapecia [35]

To know the answer, you either know what is really the nature and chemistry of a sugar solution. You can also know the answer by knowing the meaning of entropy. Entropy is often interpreted as the degree of disorder or randomness in the system. So the correct statement is that the system becomes more disordered and has an increase in entropy.

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3 years ago

Read 2 more answers