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
never [62]
3 years ago
9

Rubidium (Rb) has two isotopes. Using the data in the table below,

Chemistry
1 answer:
Burka [1]3 years ago
6 0

Answer:

85.6

Explanation:

(72 x 85) + (28 x 87)

-----------------------------

        100

= 85.56

= 85.6 (3 s.f.)

You might be interested in
Mercury (II) oxide decomposes to mercury and oxygen. In the chemical equation below, what is the subscript, x, on the oxygen equ
sertanlavr [38]
The correct subscript for the reaction would be two. Oxygen gas exists as a diatomic molecule in nature. Also, the subscript two would balance the reaction. In balancing reactions, it is important that the atoms on each side of the reaction is equal.
7 0
3 years ago
How are degrees Celsius converted to kelvins?
AnnZ [28]

Answer:The formula to convert Kelvin into Celsius is C = K - 273.15. ... Take your Kelvin temperature and subtract 273.15. Your answer will be in Celsius. The K does not use the word degree or the symbol; depending on the context, generally one or the other (or simply C) is used to report a Celsius temperature.

Explanation:

6 0
3 years ago
How many grams are there in 10.0 moles of Al2O3?
irinina [24]

Explanation:

1 mole is equal to 1 moles Al2O3, or 101.961276 grams.

8 0
3 years ago
What are two of the characteristics of water that make it so important in living<br> organisms?
Nikitich [7]

Answer:

The dissolving power of water is very important for life on Earth. Wherever water goes, it carries dissolved chemicals, minerals, and nutrients that are used to support living things. Because of their polarity, water molecules are strongly attracted to one another, which gives water a high surface tension.

7 0
3 years ago
I need a background information for this report it's due tomorrow and I'm having difficulty with it please help
Whitepunk [10]
Try using Google Scholar. It'll show you tons of educational resources on topics you look up. Good luck with your report! Hope this helps!
7 0
3 years ago
Other questions:
  • How many moles of H2O can be formed when 4.5 moles of NH3 react with 3.2 moles of O2?
    9·1 answer
  • Lead has a density of 11.3 grams/cm cubed. What mass of lead will fit in a 20 cm cubed container?
    6·1 answer
  • If 1.0 liters of 0.40 M KOH are<br>diluted to 3.0 liters what is the<br>new concentration?​
    10·1 answer
  • How would lava that comes out of a Strato volcano be described most accurately
    10·2 answers
  • One example of a chemical used in toothpaste is ________
    7·1 answer
  • What is the energy of one photon of red light that has a wavelength of 678 nm?
    13·1 answer
  • Which of the following is an example of matter?<br><br> Electricity<br> Heat<br> Light<br> Water
    15·1 answer
  • Iodine is an elemnt, but is Iodide an element or it is a compound?
    9·2 answers
  • How many moles are in 17.31 g of NaHCO,?
    12·1 answer
  • What is the chemistry​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!