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
Marrrta [24]
3 years ago
7

For the following problems, identify the substance as either an element, a compound, or a mixture. Write E for Element, C for co

mpound, and M for mixture. 34. Silicon ___E__ 35. Salad dressing __M___ 36. Table Salt (NaCl) __C___ 37. Oatmeal with apples and raisins_____ 38. Lithium _____ 39. Copper Sulfate (CuSO4) _____
Chemistry
1 answer:
andre [41]3 years ago
3 0

Answer:

Explanation:

34. E

35. M

36. C

37. M

38. E

39. C

You might be interested in
Can anyone give the ans<br><br><br><br><br><br><br><br>please<br><br><br><br><br><br>...​
Burka [1]

Answer:

..................mm.m

8 0
3 years ago
Consider two different solutions of the same UV-absorbing compound. Upon UV-analysis, Solution B gave an absorbance of 1.0 and S
Juliette [100K]

We have that the Concentration of solution B is 2.5 times more than solution A's concentration.

<h3>UV(Ultra violent) rays</h3>

Question Parameters:

Upon UV-analysis, Solution B gave an absorbance of 1.0

Solution A gave an absorbance of 0. 4

Generally the equation for the Absorbance    is mathematically given as

A = e*c*L

Therefore

For A solution  

0.4 = e*[cA]*L

For B solution  

1.0 = e*[cB]*L

Hence

\frac{0.4}{ 1} = \frac{[cA]}{ cB}

[cB] = 2.5 [cA]

Therefore

Concentration of solution B is 2.5 times more than solution A's concentration.

For more information on Wave visit

brainly.com/question/3004869

7 0
2 years ago
When a substance burns, a chemical reaction is taking place.<br><br> True<br><br> False
zvonat [6]

Answer:

True

Explanation:

4 0
3 years ago
Read 2 more answers
40.0 L of oxygen were collected at 10°C and<br> 758 mm of Hg. Calculate its volume at STP.
marta [7]

Answer:

189.5

Explanation:

its very very very very easy

3 0
3 years ago
How many different isomers can be derived from ethylene if two hydrogen atoms are replaced by a fl uorine atom and a chlorine at
svp [43]
Answer:
             THREE<span> different isomers can be derived from ethylene if two hydrogen atoms are replaced by a fl uorine atom and a chlorine atom.

Explanation:
                   When two Hydrogen atoms in ethylene (C</span>₂H₄) are replaced with Fluorine and Chlorine atom then the new molecular formula is C₂H₂FCl.
                    Compounds having same Molecular formula but different structural formula are called as Isomers.
                     First Isomer of C₂H₂FCl is 1-chloro-1-fluoroethene, in which F and Cl at geminal position (attached to same Carbon atom).
                     Other two Isomers are Geometrical Isomers of 1-chloro-2-fluoroethene, in which F and Cl at different carbon atom and having different position is space. The one in which both F and Cl at opposite side forms (<em>trans</em>)-1-chloro-2-fluoroethene and the one in which both are in same side is called as (<em>cis</em>)-1-chloro-2-fluoroethene.

8 0
3 years ago
Other questions:
  • Predict what will happen to the ammonia equilibrium system if hydrogen gas (H2) is added in the following reaction. N2(g) + 3H2(
    15·2 answers
  • What are cells? Check all that apply.
    5·1 answer
  • Select the best answer for the question.
    15·1 answer
  • Consider the chemical equations shown here.
    8·1 answer
  • Why is it difficult to see colors outside at night?
    7·1 answer
  • Non-living parts of an ecosystem (air, water, soil)
    6·1 answer
  • The picture provided shows the arrangement of electrons in atomic shells around the nucleus of four different elements.
    10·1 answer
  • Help i’ll give u points
    13·1 answer
  • What change in volume results if 75.0 mL of gas is cooled from 100.0 °C<br> to 0.00 °C
    7·1 answer
  • C. Balance these fossil-fuel combustion reactions. (1 point)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!