1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mixas84 [53]
4 years ago
9

The atomic weight of Ga is 69.72 amu. There are only two naturally occurring isotopes of gallium:

Chemistry
1 answer:
irga5000 [103]4 years ago
3 0

Answer:

71 Ga has a naturally abundance of 36%

Explanation:

Step 1: Given data

Gallium has 2 naturally occurring isotopes: this means the abundance of the 2 isotopes together is 100 %. The atomic weight of Ga is 69.72 amu. This is the average of all the isotopes.

Since the average mass of 69.72 is closer to the mass of 69 Ga, this means 69 Ga will be more present than 71 Ga

Percentage 69 Ga> Percentage 71 Ga

<u>Step 2:</u> Calculate the abundance %

⇒Percentage of 71 Ga = X %

⇒Percentage of 69 Ga = 100 % - X %

The mass balance equation will be:

100*69.72 = x * 71 + (100 - x)*69

6972 = 71x + 6900 -69x

72 = 2x

x = 36 %

71 Ga has a naturally abundance of 36%

69 Ga has a naturally abundance of 64%

You might be interested in
Do isomers have the same physical properties? Provide evidence.
Free_Kalibri [48]

Not necessarily.

<h3>Explanation</h3>

Isomers might differ in polarities. They will end up with different physical properties such as melting points.

Example:

  • 1,2-dichlorobenzene  has a melting point of around -18 ~ -17 degrees celsius. (SynQuest)
  • 1,4-dichlorobenzene (with two chlorine opposite to each other on a benzene ring) has a melting point of 52 ~ 54 degrees celsius. (SynQuest)

Both 1,4- and 1,2-dichlorobenzene contains two chlorine atoms connected to a benzene ring. The two molecules are structural isomers.

The two chlorine atoms are adjacent to each other in the 1,2 isomer. The molecule is asymmetric and polar.

The two chlorine align with an axis of symmetry in the 1,4 isomer. The molecule is symmetric. The dipoles would cancel out to produce a nonpolar molecule.

Dipole-dipole interactions are typically stronger than <em>induced</em> dipole<em> </em>in isomers. As a result, the 1,2 isomer has a higher melting point.

7 0
3 years ago
What is the source of carbon 14 in our environment ?
maksim [4K]

The reaction of atomic N with neutrons in the upper atmosphere

6 0
3 years ago
Which one has the highest Hydrogen Bonding:<br> 1. HF<br> 2. HCL<br> 3. H2O<br> 4. NH3
sleet_krkn [62]

Answer:

the answer is the

first one

5 0
3 years ago
Read 2 more answers
Describe 3 everyday situations in which it would be useful to identify unknown substances and explain how you would identify the
andrew-mc [135]

The three situations can be described as

a) If we have two white powders and wish to distinguish between the two : the combinations can be sugar / salt or sugar / baking soda or salt / baking soda

all are kitchen items so we can either taste them

or in case of baking soda we can add it in water and it will produce brisk effervescence.

b) IF we have to distinguish in a given set of two transparent liquids which appear to be water (example water and vinegar)

we can identify them with the taste

we can identify them based on pH (vinegar will be acidic)

c) We have to find adulteration in a given sample of food

like adulteration in milk

for example presence of soap in milk

We can add indicator like phenolphthalein which will bring a pink colour in milk if soap is present

4 0
4 years ago
Read 2 more answers
Please help me people it’s due today at 6:00pm please help me please please
vovangra [49]

Explanation:

gravity if it's incorrect sorry

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the power of 10 when 0.00503 is written in scientific notation?
    10·2 answers
  • How many atoms of each element does calcium sulfate, CaSO4, contain?
    10·1 answer
  • What is the mass of 1.7 × 1023 atoms of zinc (Zn)?
    11·2 answers
  • Why you share some characteristics with your mother and some with your father.
    10·1 answer
  • Which element is oxidized: SnO2 + H2 --&gt; Sn + H2O​
    8·1 answer
  • Harim placed 5mL of ethanol into a container that weighs 1 gram using a dropper. He already knew the density of ethanol is 0.78
    13·1 answer
  • What are the consequences of building a equitable water sanitation
    15·1 answer
  • Please please answer this question!!!!!!​
    14·1 answer
  • What is the mass percentage of Li2CO3
    14·1 answer
  • How does a conjugate acid differ from its conjugate base?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!