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kow [346]
3 years ago
11

What is Sublimation? ​

Chemistry
2 answers:
Dominik [7]3 years ago
6 0
The conversion of a solid to a gas.
Stolb23 [73]3 years ago
4 0

Answer:

When a solid turns to a gas.

Explanation:

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What is the percent composition of hydrogen in a compound if the mass of the initial compound is 276 gram and the mass of collec
mariarad [96]

Answer: The percentage composition of hydrogen in the given compound is 15%.

Explanation:

To calculate the percentage composition of hydrogen in a compound, we use the formula:

\%\text{ composition of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Mass of compound}}\times 100

Where,

Mass of hydrogen = 41.4 grams

Mass of compound = 276 grams

Putting values in above equation, we get:

\%\text{ composition of hydrogen}=\frac{41.4g}{276}{\times 100

Percentage composition of hydrogen in a given compound = 15%

8 0
3 years ago
List and discuss at least 4 reasons why a laboratory should operate using GLP.
Drupady [299]

Answer:

The list and discussions are stated below:

Explanation:

Good Laboratory Practice (GLP) is extremely important.

1. Organization

With GLP we can guarantee an organized work environment, which is essencial in a laboratory.

2. Safety

GLP promotes laboratory safety for personell, avoiding unecessary risks and preventing accidents.

3. Quality control

GLP ensures that experiments made and products developed in a laboratory have the demanded quality.

4. Reliability of results

GLP promotes quality of results reporting, wich directly influences the reliability of results.

7 0
4 years ago
If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water and the calorimeter incr
Savatey [412]

Answer:

The value of  the heat capacity of the Calorimeter  C_c = 54.4 \frac{J}{c}

Explanation:

Given data

Heat added Q = 4.168 KJ = 4168 J

Mass of water m_w = 75.40 gm

Temperature change = ΔT = 35.82 - 24.58 = 11.24 ° c

From the given condition

Q = m_w C_w ΔT + C_c ΔT

Put all the values in above equation we get

4168 = 75.70 × 4.18 × 11.24 +  C_c × 11.24

611.37 =  C_c × 11.24

C_c = 54.4 \frac{J}{c}

This is the value of  the heat capacity of the Calorimeter.

5 0
3 years ago
What is temperature? How do we measure temperature? What temperature unit were you supposed to record in the layers of the earth
OLga [1]

=The measure of warm and coldness of an object or substances with references to some standard value is known as temperature.

= We measure temperature by Fahrenheit (°F) scale, the Kelvin (K), and the Celsius (°C).

8 0
3 years ago
How are the properties of thermosoftening and thermosetting polymers different? Use ​ideas about the structures of these two typ
stepan [7]

Thermosoftening plastics melt when they are heated.This means that they can be recycled , which involves melting them before making a new product. Thermosoftening plastics do not have covalent bonds between neighbouring polymer molecules, so the molecules can move over each other when heated and the plastic melts.

7 0
3 years ago
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