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
balu736 [363]
3 years ago
12

The phase change in which a substance changes from a liquid to a solid is A. freezing. B. melting. C. sublimation. D. condensati

on.
Chemistry
1 answer:
vovangra [49]3 years ago
4 0

freezing. Think of what happens when you put water in the freezer

You might be interested in
PLEASE HELP!!!!! I need help with this question!
Ivahew [28]

Answer:

Exothermic Reaction

Explanation:

Its a combustion reaction and they are always exothermic in nature.

8 0
3 years ago
Draw the molecules listed below and circle any functional groups present. Provide the following information for each molecule:Mo
aksik [14]

The question requires us to draw the structural formula, provide the name and highlight any functional groups for the compound: diethyl ether.

The molecule diethyl ether can be represented as it follows, with two ethyl groups (-CH2CH3) bonded to a oxygen atom:

Note that the functional group ether (R-O-R) is present in the structre and highlighted in blue in the image. The official name of diethyl ether is ethoxyethane.

3 0
1 year ago
Which of the following is more electronegative:
Firdavs [7]
The answer is 1) CF3
Because: the equivalent of Fluorine is -1 so it aims to get an electron so much. which means it's electronegative.
but the equivalent of Hydrogen is +1 so it aims to give an electron. which means it's electropositive.




please mark as brainliest answer
5 0
3 years ago
Write the Ka expression for an aqueous solution of hydrofluoric acid: (Note that either the numerator or denominator may contain
damaskus [11]

Answer:

Ka = ( [H₃O⁺] . [F⁻] ) / [HF]

Explanation:

HF is a weak acid which in water, keeps this equilibrium

HF (aq)  +  H₂O (l)  ⇄  H₃O⁺ (aq)  +  F⁻ (aq)      Ka

2H₂O (l)  ⇄  H₃O⁺ (l)  +  OH⁻ (aq)   Kw

HF is the weak acid

F⁻ is the conjugate stron base

Let's make the expression for K

K = ( [H₃O⁺] . [F⁻] ) / [HF] . [H₂O]

K . [H₂O] = ( [H₃O⁺] . [F⁻] ) / [HF]

K . [H₂O] = Ka

Ka, the acid dissociation constant, includes Kwater.

4 0
3 years ago
which piece of evidence provides the strongest support for the theory that all living things evolved from a common ancestor?    
lianna [129]
There are many pieces of evidence provided as strong evidence: fro example the Comparative anatomy of many species. <span>This evidence is based on compares of the the skeletons of humans, cats, whales, and bats, illustrating how similar they are even though these animals live unique lifestyles in very different environments. Another piece of evidence is </span><span>biochemistry of all living things on Earth. This is so because is incredibly similar. This shows that all of Earth’s organisms share a common ancestry.</span>
5 0
3 years ago
Other questions:
  • A red blood cell placed in saline solution will shrink.<br> True or false? Explain please?
    14·1 answer
  • The density of the fat tristearin is 0.95 g cm−3 . Calculate the change in molar Gibbs energy of tristearin when a deep-sea crea
    12·1 answer
  • Sodium chloride was dissolved in water to produce a 1.5M solution. Explain what this concentration tells us about the NaCl solut
    14·1 answer
  • 2 Points<br><br> Which of these is a benefit of using cotton grocery bags?
    11·1 answer
  • Write the complete balanced equation for Manganese &amp; sulfuric acid --&gt; Manganese (II) sulfate &amp; water &amp; sulfur di
    6·1 answer
  • Wegener's claim was that the continents drifted from their original positions in Pangea
    6·1 answer
  • 13.<br> Which contains the same number of molecules as 22.4 liters of N2 at STP?
    12·1 answer
  • What element is found in amino acid that isn’t found in simple sugars like glucose or fructose?
    14·1 answer
  • Which items below are properties of matter? [select all that apply]
    13·1 answer
  • What cells do you think is in metaphase? why?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!