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
Anna007 [38]
2 years ago
10

3. Which of the following phase changes requires energy to happen?​

Chemistry
2 answers:
nydimaria [60]2 years ago
3 0

Answer:

??i do know may i ask some questions?

devlian [24]2 years ago
3 0
Sunlight ((((( 77jsjdndnnd
You might be interested in
Identify the Lewis acid and Lewis base from among the reactants in each of the following equations.
Alex

Answer:

Part A

Ag+ is the Lewis acid and NH3 is the Lewis base.

Part B

AlBr3 is the Lewis acid and NH3 is the Lewis base.

Part C

AlCl3 is the Lewis acid and Cl− is the Lewis base.

Explanation:

A Lewis acid is any specie that accepts a lone pair of electrons. Ag^+, AlBr3 and AlCl3 all accepted lone pairs of electrons according to the three chemical reaction equations shown. Hence, they are Lewis acids.

A Lewis base donates a lone pair of electrons. They include neutral molecules having lone pair of electrons such as NH3 or negative ions such as Cl- .

3 0
2 years ago
Why is amniocentesis a more widely used test than cvs?
maw [93]
Higher probability of loss. Chorionic villus sampling (CVS) and Amniocentesis (AC). The prenatal diagnosis technique can be done earlier in fetal development CVS (first trimester --> 10-13 weeks). AC (second trimester --> 16-20 weeks)

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
4 0
2 years ago
Choose a generic equation showing how a weak base ionizes water.
FinnZ [79.3K]
Hi!

The generic equation showing how a weak base ionizes water is the following:

B(aq) + H₂O(l) ⇄ BH⁺(aq) + OH⁻(aq)

A base is described as weak when its dissociation is difficult and isn't complete. Weak Bases are chemical compounds that accept protons from water, to form the conjugate acid and the OH⁻ ion. The pH of the solution of a weak base is higher than 7. Some weak bases include ammonia (NH₃), Aluminum Hydroxide (Al(OH)₃) and Sodium Acetate (CH₃COONa).

Have a nice day!
4 0
2 years ago
Many of water's emergent properties, such as its cohesion, its high specific heat, and its high heat of vaporization, result fro
erastova [34]

Answer: are electrically attracted to each other

Explanation:Water molecules are attracted to each other by partial negative and positive charges on the oxygen and hydrogen atoms, respectively

6 0
2 years ago
Read 2 more answers
HELP WILL GIVE BRAINLIESTWhich of these elements would have the largest ionic radius?
iogann1982 [59]

Answer:

Bi3+ has 103

C4- has 170

Li+ 76

Na+102

Cl-185

5 0
3 years ago
Other questions:
  • How do social forces shape technology
    14·1 answer
  • What is the chemical equation for diphosphorus trioxide + water ---> phosphorous acid?
    15·1 answer
  • The area of the circular base of a can of
    12·1 answer
  • Humans could try to pollinate food crops by hand, but this would be expensive and time consuming. Natural pollinators, like bees
    7·1 answer
  • What stops gravity from pulling water to the center of the earth
    8·2 answers
  • The molar mass of a gas is 56 grams. What is its density at STP in grams per liter?
    13·1 answer
  • Please help me with this science question!! 20 points ​
    8·1 answer
  • The ion Te2- has how many protons
    13·1 answer
  • In a chemical reaction, mass is conserved. This means that
    12·1 answer
  • The number of cobalt atoms in 0.00103 mole of cobalt​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!