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AleksandrR [38]
3 years ago
8

What happens when samples of matter interact?

Chemistry
1 answer:
liberstina [14]3 years ago
7 0

Answer:  matter and its interaction with energy. Matter has mass and occupies space. A Substance is matter that cannot be separated into other kinds of matter by physical means.

Explanation:

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2. A sample of table sugar (sucrose, C12H22O11) has a mass of 1.202 g.
Snezhnost [94]

Explanation:

Given mass of sugar = 1.202 g

Molar mass of the sugar , C_{12}H_{22}O_{11} = 342.29 g/mol

a) Number of moles of sugar

\text{number of moles}=\frac{\text{given mass of sugar}}{\text{molar mass of sugar}}=\frac{1.202 g}{342.29g/mol}=0.0035 mol

Number of moles of sugar in 1.202 grams is 0.0035 moles

b)Moles of each element in C_{12}H_{22}O_{11}

In a molecular formula of sugar there are 12 carbon, 22 hydrogen and 11 oxygen atoms

Moles of an element in molecule =

number of atoms of that element in a molecular formula × number of moles of compound

Moles of carbon = 12 × 0.0035 = 0.042 moles

Similarly

Moles of hydrogen = 22  × 0.0035 = 0.077 moles

Moles of oxygen =11 × 0.0035 = 0.0385 moles

c) Number of atoms of each type in C_{12}H_{22}O_{11}

\text{Number of atoms}=\text{number of moles of that atom in a molecular formula}\times \text{Avogadro number}

Number of carbon atoms =0.042 mole\times 6.022 \times 10^{23}=2.52\times 10^{22} atoms

Number of hydrogen =0.077mole\times 6.022 \times 10^{23}=4.63\times 10^{22} atoms

Number of oxygen atoms = 0.0385 mole\times 6.022 \times 10^{23}=2.31\times 10^{22} atoms

7 0
3 years ago
Read 2 more answers
Every time matter changes from a liquid to a gas, the matter also experiences a change in the
Aleksandr-060686 [28]

Matter is predominantly know to exist in three states-

-Solid

-Liquid

-Gas

The three states can be interconverted at appropriate temperature and pressure conditions. Each state exhibits unique properties which are influenced by the intermolecular forces that hold the atoms together in these states.

Ans: Thus, Every time matter changes from a liquid to a gas, the matter also experiences a change in the <u>state (or phase)</u>

8 0
3 years ago
Read 2 more answers
A student conducts an experiment to determine how the temperature of water affects the time for sugar to dissolve. In each trial
Blababa [14]

What is wrong with the experimental design is that the student changed more than one independent variable.

WHAT AN EXPERIMENT SHOULD CONTAIN?

  • An experiment is a procedural method of solving a scientific problem or answering a scientific question. An ideal experiment should contain two variables namely: independent variable and dependent variable.

  • Dependent variable: This is the variable that the experimenter measures in the experiment. The dependent variable responds to changes made to the independent variable.

  • Independent variable: This is the variable that is manipulated in an experiment in order to bring about a response.

In the experiment conducted by the student in this question in order to determine how the temperature of water affects the time for sugar to dissolve. The independent variable is the DIFFERENT TEMPERATURE OF WATER while the dependent variable is the TIME TAKEN FOR SUGAR TO DISSOLVE.

N.B: An experiment should have only one independent variable and all other variables should be kept constant. This is to have a reliable result.

  • However, this student used two independent variables (temperature and amount of water) for the experiment, which is wrong for the experimental design.

Therefore, the fact that the student changed more than one independent variable is wrong for the experimental design.

Learn more: brainly.com/question/967776

4 0
3 years ago
Large molecules are formed by what process?
inn [45]
Atoum is the process of how large molecules are formed
7 0
3 years ago
The equation X + Y yields 
masha68 [24]
Most likely the equation yields a new compound XY. This is a synthesis reaction. <span>Synthesis reaction is a reaction where two or more substances combine to form a new compound. It is a reaction which releases energy in the form of heat and light. Therefore, it is an exothermic reaction.</span>
6 0
4 years ago
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