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Sever21 [200]
2 years ago
8

In an experiment trying to dissolve sugar in water, a person boils water in a pot on the stove and then puts the water and the s

ugar in a cup. That person times how long it takes to dissolve the sugar.
Chemistry
1 answer:
quester [9]2 years ago
5 0

Answer:

it take many long time but i dont know accurate time

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25 g of a compound is added to 500 mL of water if the freezing point of the resulting solution is
vlabodo [156]

Answer:

a)   119 g/mol

Explanation:

-We apply the formula for freezing point depression to obtain the molality of the solution:

\bigtriangleup T_f=K_fm, \  \ K_f=1.36\textdegree C/m\\\\\therefore m=\frac{\bigtriangleup T_f}{K_f}\\\\=\frac{0.57\textdegree C}{1.36\textdegree C}\\\\=0.4191\ mol/Kg\\\\

#We use the molality above to calculate the molar mass:

m=\frac{0.4191\ mol}{1\ Kg}=\frac{25\ g}{0.5\ Kg}\\\\\therefore 1 \ mol=\frac{25\ g}{0.5\ Kg}\times\frac{1\ Kg}{ 0.4191}\\\\=119.3033\approx 119\ g/mol

Hence, the molar mass of the compound is 119 g/mol

5 0
3 years ago
Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to pr
Evgen [1.6K]

Answer:

The answer to your question is:   "react with acids to produce hydrogen gas"

Explanation:

Chemicals properties of matter: are properties that can be measured if there is a chemical change or chemical reaction.

Examples of chemical reactions:

Reactivity

Toxicity

Coordination number

Flammability

Of the properties listed, the only that implies a reaction is "react with acids to produce hydrogen gas"

7 0
3 years ago
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10. How much protein one should obtain from diet<br> (1 gram, 3 gram,4gram)
jarptica [38.1K]

How much protein one should obtain from diet

Answer:

4 gram

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3 years ago
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What is used for mixing a small amount of chemicals together?
DENIUS [597]

a thin solid glass rod that is used in chemistry to combine substances. A stirring rod often has rounded ends and is about the length of a long straw.

<h3>What use serves the stirring rod?</h3>

A crucial component of lab apparatus for mixing chemicals and liquids for reactions is a long, thin stirring rod. Stirring rods are made of solid plastic, glass, or steel and are non-abrasive, chemically inert, and chemically resistant.

<h3>What is the name of the glass stirring rod?</h3>

Glass rod, also known as a stirring rod, stir rod, or solid glass rod, is frequently made of quartz and borosilicate glass. Its diameter and length can be modified to meet your needs.

<h3>Does filtration employ stirring rods?</h3>

When the liquid transfer procedure is paused, use a stirring rod to direct the liquid flow into the funnel and stop small amounts of liquid from dribbling down the beaker's outside.

learn more about stirring rod here

<u>brainly.com/question/9971891</u>

#SPJ4

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2 years ago
Geometric isomers have profound effects on the physical properties of compounds. Naturally occurring fatty acids generally adopt
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