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3 years ago

Give an example of a physical property and a chemical property

Chemistry

1 answer:

KiRa [710]3 years ago

6 0

Answer:

physical and chemical properties. Examples of physical properties are: color, smell, freezing point, boiling point, melting point, infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density. There are many more examples.

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How many grams of lithium are in 6.02*10^21 atoms

valentinak56 [21]

the answer is 0.0693769. 6.02x10^21 x6.94/ 6.022x10^23 is the formua you would use.

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4 years ago

Examples of isotones

lukranit [14]

Answer:

Examples of isotones include carbon-12, nitrogen-13 and oxygen-14. These atoms all have six neutrons and six, seven and eight protons respectively. A mnemonic that can be used to differentiate isotones from isotopes and isobars is as follows: same Z (number of protons) = isotopes.

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3 years ago

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A gas is confined in a 0.3m diameter cylinder by a piston, on which rests a weight. The mass of the piston is 85 kg. The local a

iris [78.8K]

Explanation:

Force applied on the gas will be as follows.

$F_{gas} = F_{atm} + (m + M) g$

As, F = pressure × area. Hence, calculate the forces as follows.

$F_{gas}$ = pressure × area

= $1.4 \times 10^{5} Pa \times \pi \times (\frac{0.3}{2})^{2}$

= $1.979 \times 10^{4}$ N

$F_{atm}$ = pressure × area

= $1.0133 \times 10^{5} \times \pi \times (\frac{0.3}{2})^{2}$

= $1.432 \times 10^{4}$ N

$F_{gas}$ - $F_{atm}$ = $5.47 \times 10^{3}$ N

Substituting the calculated values into the above formula as follows.

$F_{gas} = F_{atm} + (m + M) g$

$F_{gas} - F_{atm}$ = (m + M) g

$5.47 \times 10^{3}$ N = $(m + 85) \times 9.8$

$5.47 \times 10^{3}$ N = $9.8m + 833$

m = 472.76 kg

Thus, we can conclude that the mass is 472.76 kg.

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4 years ago

Draw the structure of the major organic product isolated from the reaction of 3-hexyne with hydrogen (1 mol), Lindlar palladium.

ohaa [14]

Answer:

See explanation and image attached

Explanation:

When 1 mole of hydrogen is added to 3-hexyne, the addition occurs on the same face or side of the triple bond to yield cis-2-hexene in the presence of lindlar catalyst which prevents further hydrogenation. This is known as syn addition.

The syn addition is achieved because the hydrogen molecule is first adsorbed on the surface of the palladium metal and is subsequently attached to the same face of the triple bond in 3-hexyne as shown in the image attached to this answer.

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3 years ago

Debbie was doing a science lab, and she was instructed to decide whether a piece of plastic would float or sink without actually

Mandarinka [93]

Find the density of the plastic. if the density is less than that of water, it's going to float. If it's more than the density of water, then it's going to sink.

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3 years ago

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