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
inn [45]
3 years ago
12

3. Density is influenced by changes in

Chemistry
1 answer:
dem82 [27]3 years ago
5 0

Answer:

Atoms or molecules

Explanation:

Because if molecules are heated or colded the can be liquid or solid

You might be interested in
If i perform this reaction by combining 25.0 grams of lioh with an excess of fe(no3)3, how much fe(oh)3 will i be able to make
Vilka [71]
3LiOH+Fe(NO3)3--›Fe(OH)3↓+3LiNO3
n(LiOH)=m/M=(25g)/(24g/mol)=1,0417mol
n(Fe(OH)3)=1/3n(LiOH)=0,3472mol
m(Fe(OH)3)=n*M=0,3472mol*107g/mol=37,15g
7 0
4 years ago
How many molecules are in 0.33 moles of CaCO3?
Nesterboy [21]
Answer: hope this is correct

3 0
3 years ago
PLEASE HELP!!!!!!!!Which of the following chemical reactions is best clasified as an acid-base reaction?
ANTONII [103]

Answer:

d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

Explanation:

  • The given reactions are:

a . 2HgO → 2Hg + O₂,

It is a decomposition reaction, that HgO is decomposed to give Hg and O.

b . Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl,

It is a double replacement reaction where two salts replaces their cations and anions with each others producing 2 new salts.

c . Zn + 2AgNO₃ → Zn(NO₃)₂ + 2Ag,

It is a single replacement reaction, that Zn replaces Ag from its salt.

d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O

It is acid-base reaction "neutralization reaction" where H₂SO₄ (acid) reacts with KOH (base) producing K₂SO₄ (salt) and water.

  • So, the right choice is:

<em>d . H₂SO₄ + 2KOH → K₂SO₄ + 2H₂O</em>

<em></em>

3 0
4 years ago
OH- of a solution that has a pH of 8.57
Shkiper50 [21]

Answer:

I think its -8.75

Explanation:

Hope this helps!11

8 0
3 years ago
What is/are the only reason(s) that a reaction may have a percent yield above 100%?
natta225 [31]
Usually, percent yield is lower than 100% because the actual yield is often less than the theoretical value. Reasons for this can include incomplete or competing reactions and loss of sample during recovery. Percent yield is always a positive value. I hope this can help you
6 0
3 years ago
Other questions:
  • A solution is considered neutral if its pH is _________ 7.
    15·2 answers
  • Convert 15.4 moles of Ca3(PO4)2 to grams.
    13·1 answer
  • How much energy is needed to melt 47.6g of water
    13·1 answer
  • Acyl-CoA + FAD ↔ trans-Δ2-enoyl-CoA + FADH2 (NOTE: the double tipped arrow means forward and reverse)
    6·1 answer
  • Why does the chlorine compound has the properties it does by its bonding and structures
    7·1 answer
  • A chemist determines by measurements that .060 moles of nitrogen gas participate in a chemical reaction. Calculate the mass of n
    14·1 answer
  • The limestone used in building the Egyptian pyramids was used because it is _____________
    14·2 answers
  • CAN SOMEONE PLEASEEEE DO THIS!!! ASAP ILL GUVE AS MANY POINTS AS I CAN Laboratory Techniques Lab Report
    5·1 answer
  • (ONLY ANSWER IF U R SURE PLZ) A scientist is performing a fermentation of bioethanol and the current pH is roughly 6.5. What sho
    8·2 answers
  • Work out the following calculation: Mass of 0.25 moles of oxygen gas (O2). (O= 16 g/mol)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!