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
Novay_Z [31]
3 years ago
9

A __________ has distinct properties and composition that never vary

Chemistry
1 answer:
Nutka1998 [239]3 years ago
4 0

Answer:

Pure Substance

Explanation:

i just answered this question in class

You might be interested in
What is the ph of a solution with hydrogen ion concentration of 0.001m?
lys-0071 [83]
Find the pH using the concentration of hydrogen ions [H+] of 0.001M (molarity) by taking the negative log of the value:

-log[H+]=pH
-log[0.001] = pH
-log[1x10^-3]=pH
3=pH
6 0
3 years ago
Ethylene glycol (C2H6O2) is used as an antifreeze in cars. If 450 g of ethylene glycol is added to 4.25 kg of water, what is the
slamgirl [31]

cccccccccccccccccccccccccccccccccccccc

3 0
3 years ago
Balance the redox reaction equation (occurring in acidic solution) and choose the correct coefficients for each reactant and pro
algol13
Balanced chemical reaction: 
PbO₂<span>(s) + Sn(s)+ 4H</span>⁺(aq) → Pb²⁺(aq) + Sn²⁺(aq) + 2H₂O<span>(l).
Oxidation half-reaction: Sn </span>→ Sn²⁺ + 2e⁻.<span>
Reduction half-reaction: PbO</span>₂ + 4H⁺ + 2e⁻ → Pb²⁺ + 2H₂O.
Net reaction: Sn + PbO₂ + 4H⁺ + 2e⁻ → Sn²⁺ + 2e⁻ + Pb²⁺ + 2H₂O.
Oxidation is increase of oxidation number, reduction is decrease of oxidation number.
6 0
4 years ago
CHEM HELP!
sweet [91]

So let's convert this amount of mL to grams:

\frac{13.6g}{1mL}*1.2mL=16.32g

Then we need to convert to moles using the molar weight found on the periodic table for mercury (Hg):

\frac{1mole}{200.59g}*16.32g=8.135*10^{-2}mol

Then we need to convert moles to atoms using Avogadro's number:

\frac{6.022*10^{23}atoms}{1mole} *[8.135*10^{-2}mol]=4.90*10^{22}atoms

So now we know that in 1.2 mL of liquid mercury, there are 4.90*10^{22}atoms present.

4 0
4 years ago
From which plant can benzoic acid be obtained from?​
Sergeeva-Olga [200]

Explanation:

styrax benzoin is what benzoic acid is obtained from

7 0
4 years ago
Other questions:
  • Which of the three sub-atomic particles is able to move from atom to atom?
    8·1 answer
  • Click on the Delta H changes sign whan a process is reversed button within the activity and analyze the relationship between the
    13·1 answer
  • 1. The solubility of lead(II) chloride at some high temperature is 3.1 x 10-2 M. Find the Ksp of PbCl2 at this temperature.
    12·1 answer
  • Where would you find the following symbol on a diagram of a water molecule: δ+ ?
    8·1 answer
  • Is 4atm to big of a difference to get when I use the ideal gas law vs the van der waals equation?
    8·1 answer
  • Which sublevel contains valance electrons in an atom of magnesium (mg)?
    6·2 answers
  • Which best describes a chain reaction associated with a nuclear reaction A Neutrons released during a fusion reaction cause othe
    5·1 answer
  • The MO diagram of CN is similar to N2. Based on the molecular orbital energy-level diagram of CN, which of the following stateme
    7·1 answer
  • How much DNA can be extracted from an onion
    11·1 answer
  • How has the U.S. Census Bureau changed the way it records information about relationships?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!