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Alenkasestr [34]
3 years ago
14

How does physical properties differ from chemical properties? 1.Chemical properties are observed using your senses. 2.Chemical p

roperties can only be observed using your taste sense. 3.Physical properties can be observed and chemical properties cannot. 4.Physical properties cannot be observed and chemical properties can.
Chemistry
1 answer:
mel-nik [20]3 years ago
7 0

Answer:

3. Physical properties can be observed and chemical properties can't

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Why can you predict the base sequence of one strand in a molecule of DNA if you know the sequence of the other strand?
lukranit [14]
C - In DNA, each base pairs up with only 
one other base.

Pretty confident on this answers :D
7 0
3 years ago
Which statements accurately describe soap? Select one or more: check_boxSoaps should be weakly alkaline in solution. check_box_o
Firdavs [7]

Answer:

Soaps are a mixture of fatty acid salts and glycerol.

Explanation:

Soap is made from the reaction

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4 0
3 years ago
The measure of the speed of the moving or<br> vibrating particles is called the
saw5 [17]

Answer:

Temperature

Explanation:

It's called temperature.

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4 0
3 years ago
How many moles of N2O3 contain 2.55 × 1024 oxygen atoms
Varvara68 [4.7K]
1mol   ------------   3×6,02×10²³ oxygen atoms
x          ------------   2,55×10²⁴

x = 2,5×10²⁴ × 1mol / 3×6,02×10²³ ≈ 0,138*10 mol = 1,38mol

6 0
3 years ago
What would happen if you left your dichloromethane/ethanol solvent mixtures uncovered?
Viktor [21]
Dichloromethane/ethanol solvent mixtures are substances composed of compounds that has a very high volatility. The higher the volatility of the substances, the faster it is for them to vaporized. 

If we leave the solution or the mixture uncovered then, it is easier for the vapors produced to escape the system to the atmosphere. 
3 0
4 years ago
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