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2 years ago

Phase changes lab, please! I need help fast deadline is really close.

Chemistry

1 answer:

Lapatulllka [165]2 years ago

5 0

Phase change occur in substances when the they change from one state of matter to another due to the addition or removal of heat.

<h3>What are phase changes?</h3>

Phase changes refers to the changes that occur in substances in which they change from one state of matter to another due to the addition or removal of heat.

The phase changes that occur in substances are as follows:

change from solid to liquid known as melting
change from liquid to gas known as vaporization
change from solid to gas known as sublimation
change from gas to solid known as deposition
change from gas to liquid known as condensation
change from liquid to solid known as freezing

Therefore, phase change occur in substances when the they change from one state of matter to another due to the addition or removal of heat.

Learn more about phase change at: brainly.com/question/13067020

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To determine the concentration of X in an unknown solution, 1.00 mL of 8.48 mM S was added to 3.00 mL of the unknown X solution

kogti [31]

Answer:

positif

Explanation:

$3.87169.843826 = y = x = .ion \: in \: cells = y = x. > \\ \geqslant {8}^{2} \times \frac{4}{3} | \geqslant | \times \frac{68.1 < }{3 = 8}$

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3 years ago

What is the percent error when a student measures the volume to be 19.3 liters when

katrin2010 [14]

Answer:

The answer is

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\% \\$

From the question

actual volume = 22.4 L

error = 22.4 - 19.3 = 3.1

The percentage error is

$P(\%) = \frac{3.1}{22.4} \times 100 \\ = 13.839285714...$

We have the final answer as

Hope this helps you

7 0

3 years ago

Which of the following is a metal?

kogti [31]

Answer:

A.................. I think the answer

3 0

3 years ago

Which of the following is one way to prevent the corrosion of iron?

Drupady [299]

B: Painting over a metal surface in order to prevent rust is known as rust proofing and it works by preventing oxygen and water from reaching the metal surface thus preventing a redox reaction which would result in rusting.

4 0

3 years ago

21) What is the mass of 5.22 moles of Na 2 CO 3

german

Answer:

5.22 moles of Na₂CO₃ have mass of 553.22 g

Explanation:

Given data:

Mass of Na₂CO₃ = ?

Number of moles of Na₂CO₃ = 5.22 mol

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of Na₂CO₃ = 105.98 g/mol

Mass = 5.22 mol × 105.98 g/mol

Mass = 553.22 g

Thus, 5.22 moles of Na₂CO₃ have mass of 553.22 g.

4 0

3 years ago