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
GenaCL600 [577]
4 years ago
12

A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar System. Mass-spectroscopic ana

lysis produced the following data on the isotopes of molybdenum in these samples:
isotope mass
(amu) relative
abundance
96Mo
95.9
90.6%
95Mo
94.9
9.4%
Use these measurements to complete the entry for molybdenum in the Periodic Table that would be used on 98765 ALEKS. Be sure your answers have the correct number of significant digits.

Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for molybdenum in the Periodic Table we use here on Earth.
Chemistry
1 answer:
antoniya [11.8K]4 years ago
4 0

Answer:97.8amu

Explanation:

The relative atomic mass of molybdenum is the sum of the masses of all the isotopes of molybdenum in nature.

(90.6/100 × 95.9/1) + (9.4/100 × 94.9/1) =

(0.906×95.9) + (0.094×94.9)=

86.8854+8.9206=97.8amu

You might be interested in
A balloon is inflated such that a radius is 7 cm what is the volume of air inside the balloon in milliliters
DedPeter [7]

Answer:

V=14373.33\ \text{mm}^3

Explanation:

It is given that,

The radius of the inflated balloon is 7 cm.

We need to find the volume of air inside the balloon in milliliters.

The balloon is in the shape of a sphere whose volume is given by :

V=\dfrac{4}{3}\pi r^3\\\\\text{Put r = 7 cm}\\\\V=\dfrac{4}{3}\times \dfrac{22}{7}\times 7\times 7\times 7\\\\V=1437.33\ \text{cm}^3\\\\\text{We know that, 1 cm = 10 mm}\\\\\text{So},\\\\V=14373.33\ \text{mm}^3

Hence, the volume of the air inside the balloon is 14373.33\ \text{mm}^3.

3 0
3 years ago
Calculate the number of moles and molecules of acetic acid in 22gm of it​
aivan3 [116]

Answer:

0.366 moles to the nearest thousandth.

Explanation:

The molar mass of acetic acid CH3COOH = 2*12 + 4(1.008) + 2*16

= 60.03 g so the number of moles in 22 g

= 0.366.

3 0
4 years ago
Which of the following statements is true about an endergonic reaction? ∆G is positive ∆G is negative ∆S is negative
Mazyrski [523]
The answer is the first option, <span>∆G is positive.</span><span> </span><span>Endergonic reaction is a chemical reaction where the Gibbs free of energy is positive and there is abosrption of energy. It is a nonspontaneous reaction or unfavorable reaction.</span>
8 0
3 years ago
What is the mass, in grams, of one mole of any substance known as?
Mashutka [201]

The answer is B. the molar mass.

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles.

4 0
3 years ago
Read 2 more answers
Why do animals need carbohydrates in their diets
Sever21 [200]

Answer:

Carbohydrates are energy-providing feed components composed of carbon, hydrogen, and oxygen. They should make up about 75 percent of an animal's diet. The energy they provide powers muscular movements. Carbohydrates also produce the body heat that helps keep the animal warm.

8 0
3 years ago
Other questions:
  • 2-Ethoxy-2,3-dimethylbutane reacts with concentrated aqueous HI to form two initial organic products (A and B). Further reaction
    11·1 answer
  • Which statement is true of unstable isotopes?
    9·1 answer
  • Calculate the mass of 2.00 X 1020 molecules of SO3.
    15·1 answer
  • Why can't liquids change volume but gasses can?
    12·2 answers
  • Help Anyone! What would be the correct answer to this question?
    12·1 answer
  • Please please help me solve this, I have a test and only 20 mins left T-T<br>​
    13·1 answer
  • Calculate the number of moles in 125g of Copper (II) Hydroxide. URGENT!
    11·1 answer
  • MgCl2 (aq) + K2SO4 (aq) --&gt; 2KCl (aq) + MgSO4 (s)
    8·1 answer
  • How do chemical characteristics of rocks effect water
    8·1 answer
  • Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!