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
Dafna1 [17]
3 years ago
14

Metals that really react with cold water are __________ and __________

Chemistry
1 answer:
miv72 [106K]3 years ago
8 0

Answer:

potassium and sodium

Explanation:

because they are the highest in the reactivity series

You might be interested in
Which describes the polarity in a water molecule?
PilotLPTM [1.2K]
<span>Water is considered as a polar molecule because its electrons has an uneven distribution. It has a partial negative charge and a partial positive charge on both ends of the molecule. </span>I hope my answer has come to your help. God bless and have a nice day ahead!
7 0
3 years ago
Read 2 more answers
Choose the covalent compounds from the following choices Br2 MgS SO2 KF
Novosadov [1.4K]

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

 

                Less than 0.4 then it is Non Polar Covalent Bond

                

                Between 0.4 and 1.7 then it is Polar Covalent Bond

            

                Greater than 1.7 then it is Ionic

 

For Br₂;

                    E.N of Bromine      =   2.96

                    E.N of Bromine      =   2.96

                                                   ________

                    E.N Difference             0.00          (Non Polar Covalent Bond)


For MgS;

                    E.N of Sulfur               =   2.58

                    E.N of Magnesium      =   1.31

                                                   ________

                    E.N Difference                  1.27          (Ionic Bond)


For SO₂;

                    E.N of Oxygen      =   3.44

                    E.N of Sulfur          =   2.58

                                                   ________

                    E.N Difference             0.86          (Polar Covalent Bond)


For KF;

                    E.N of Fluorine          =   3.98

                    E.N of Potassium      =   0.82

                                                   ________

                    E.N Difference                3.16          (Ionic Bond)

Result: The Bonds in Br₂ and SO₂ are Covalent in Nature.

3 0
3 years ago
A solution of sodium chloride in water has a vapor pressure of 19.6 torr at 25°C. What is the mole fraction of NaCl in this solu
Debora [2.8K]

Answer:

Mole fraction of Nacl is 0.173

Explanation:

we know that

P_{sol}=\chi_{solvent}P^0_{solvent}

where,

P sol  - the vapor pressure of the solution

χ  solvent - the mole fraction of the solvent

P ∘ solvent  - the vapor pressure of the pure solvent

This means that in order to be able to calculate the mole fraction of sodium chloride, you need to know what the vapor pressure of pure water is at  

25 ° C  You can use an online calculator to find that the vapor pressure of pure water at  25 C  is equal to about  23.8 torr .

\chi_{water}= \frac{P{sol}}{P^0{water}}

\chi_{water}= \frac{19.6}{23.8}

=0.827

Also we know that

\chi_{water}+\chi_{Nacl}= 1

This means that the mole fraction of sodium chloride is

χ_{Nacl}= 1-Χ_{water}

= 1-0.827 =0.173

3 0
3 years ago
In the Polyacrylamide and Agarose Gels lab, when working with your protein or DNA sample you must wear:
blagie [28]
It’s a. All of these, you’re welcome
6 0
3 years ago
Read 2 more answers
Which substance is a diatomic molecule? <br> a. he <br> b. o2 <br> c. co2 <br> d. h2o?
BigorU [14]
b. o2
oxygen is diatomic because 1 molecule is made of 2 atoms of oxygen
4 0
3 years ago
Other questions:
  • Ions in a certain volume of 0.20MNaCl(aq) are represented in the box above on the left. In the box above on the right, draw a pa
    5·2 answers
  • What volume of 15.6M NH4OH is needed to make 500. mL of 3.00M solution?
    11·1 answer
  • Describe the motions of particles in the 3 common states of matter
    12·1 answer
  • What types of emergency situations could rescue workers be in that would make it difficult for them to get energy to their elect
    14·1 answer
  • Explain what happens to the light ray when it travels through air and then into water
    12·2 answers
  • PLEASE HELP REALLY IMPORTANT
    11·1 answer
  • Н - О - Н<br> I have to find the Molecular formula
    8·1 answer
  • The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.
    11·2 answers
  • How can one separate and collect the solvent from a salt solution​
    7·1 answer
  • What is a quick way to determine how many energy levels an element possesses?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!