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
Talja [164]
3 years ago
9

Rubidium has a mass number of 87 and an atomic number of 37. how many electrons does it have?

Chemistry
2 answers:
Elis [28]3 years ago
5 0
Rubidium has 37 elections. there are multiple other sources you could use too confirm this. :-)
Aleksandr [31]3 years ago
5 0
Rubidium's (Rb) Z = 37
Z ( atomic number ) means , No: of proton or no: of electrons.
.: Number of electrons = 37
You might be interested in
How many molecules are in 7V205?​
elixir [45]

Answer:

Calculate the number of moles you have by taking the Mass / molar mass. if you have 1000 grams ; then 1,000 g / 151.001 g/mol = X g moles. Then multiply by Avogadros # = 6.022140857 × 10^23 molecules per g mole. The result is the # of molecules of MnSO4

Explanation: Hope this helps

7 0
2 years ago
Conversion factor 2.23 seconds to kilograms
Archy [21]

there is no conversion between the two due to one is time and one is weight

8 0
3 years ago
How many neutrons are present in an atom of
Tamiku [17]
There’s going to be 8 neutrons presented
4 0
3 years ago
On a cool morning, uyen’s breath can form a cloud when she breathes out. which changes of state are most responsible for uyen se
Ganezh [65]
<span>You may already know that when you breathe in, your body takes in oxygen from the air. When you breathe out, your lungs expel carbon dioxide back into the air. But the breath you breathe out contains more than just carbon dioxide.</span>

When you exhale (breathe out), your breath also containsmoisture. Because your mouth and lungs are moist, each breath you exhale contains a little bit of water in the form of water vapor(the gas form of water).

For water to stay a gas in the form of water vapor, it needs enough energy to keep its molecules moving. Inside your lungs where it's nice and warm, this isn't a problem.

4 0
3 years ago
Read 2 more answers
Combustion analysis of 0.300 g of an unknown compound containing carbon, hydrogen, and oxygen produced 0.5213 g of co2 and 0.283
Lyrx [107]
First, we have to get how many grams of C & H & O in the compound:
- the mass of C on CO2 = mass of CO2*molar mass of C /molar mass of CO2
                                        = 0.5213 * 12 / 44 = 0.142 g
- the mass of H atom on H2O = mass of H2O*molar mass of H / molar mass of H2O
                                                 =0.2835 * 2 / 18 = 0.0315 g
- the mass of O = the total mass - the mass of C atom - the mass of H atom
                          =  0.3 - 0.142 - 0.0315 = 0.1265 g
Convert the mass to mole by divided by molar mass
C(0.142/12) H(0.0315/2) O(0.1265/16) 
C(0.0118) H(0.01575) O(0.0079) by dividing by the smallest value 0.0079
C1.504 H3.99 O1 by rounding to the nearst fraction
C3/2 H4/1 )1/1 multiply by 2 
∴ the emprical formula C3H8O2
           



6 0
3 years ago
Other questions:
  • In a coffee shop, the following coffee samples are prepared for customers. i. 10 g of sugar added to 100 g of coffee ii. 10 g of
    14·2 answers
  • A posssible answer to a scientific question is called a
    11·2 answers
  • Suppose that you have a 60 0% solution of NaOH. How many millions of water must be added to 300 ml of this solution to prepare a
    6·1 answer
  • A molecule with the formula ax3 uses __________ to form its bonds. multiple choice sp2 hybrid orbitals sp hybrid orbitals sp3d2
    13·2 answers
  • A container holds 15.0g of phosphorous gas at a pressure of 2.o atm and temp of 20 Celsius. What is the density of the gas
    8·1 answer
  • What is the most mass of (NH4)2CO3 (H=1,C=12,N=14,O=16
    13·1 answer
  • When the equation below is balanced with the smallest possible integer coefficients, what is the coefficient for PH3?
    8·1 answer
  • Ionic equation for Sr3(PO4)2 and its solubility product (Ksp)?​
    13·1 answer
  • Study the topographic map.
    10·2 answers
  • g How many moles of NaOH are present in a sample if it is titrated to its equivalence point with 44.02 mL of 0.0885 M H2SO4? 2Na
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!