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wariber [46]
3 years ago
13

When sugar is dissolved in hot tea, physical changes occur. Write two physical properties of sugar

Chemistry
1 answer:
kompoz [17]3 years ago
6 0

Answer:

When you mix the sugar into the tea and stir, it dissolves so you can't see it. Also when you stir the sugar into the tea the taste changes and it turns sweeter.

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A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. Which test co
BigorU [14]

Answer:

i have no idea

but its b

Explanation:

3 0
3 years ago
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A 1.897g sample of Mg(HCO3)2 was heated and decomposed. When the sample
svlad2 [7]

1.5 % is the percent yield in the reaction.

Explanation:

Given that:

original mass of the sample used in reaction = 1.897 grams

product formed after decomposition = 1.071 grams

The reaction for the decomposition:

Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)

It says that 1 mole of Mg(HCO3)2  yielded 1 mole of  MgCO2  on decomposition

68.31 grams/mole or 68.31 grams of MgCO2 is formed

percent yield = \frac{actual yield}{theoretical yield} x 100

putting the values in the equation:

percent yield = \frac{1.071}{68.31}

                       = 0.015 x100

   PERCENT YIELD = 1.5 %

8 0
3 years ago
Four students presented different analogies to describe the formation of an ionic bond.Student A: A tug of war between seven mid
MissTica

Answer:

The answer is A

Explanation:

I took the test

6 0
2 years ago
Which of these is a mixture? a.water b.sugar c.carbon dioxide d.popcorn and salt​
Dmitry_Shevchenko [17]

Popcorn and salt as the mixtures are substances which are formed by mixing other substances

7 0
3 years ago
The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this diffe
den301095 [7]

Answer:

See explanation

Explanation:

Given that the formula of the compound is Fe2O3, if a coefficient of 2 is placed in front of the formula, that is, if we write 2Fe2O3 . Then;

The number of Fe atoms becomes 2 *2 = 4

The number of oxygen atoms becomes 2*3 = 6

That is why the total number of iron atoms were written down as 4.

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3 years ago
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