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Anarel [89]
3 years ago
14

A nucleus emits an alpha particle. What happens to the mass

Chemistry
1 answer:
babunello [35]3 years ago
4 0

Answer:

the mass number decreases by 4 and the atomic number decreases by 2

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Why is oxygen diflouride a gas at room temperature?
atroni [7]

Answer:

Oxygen is a simple molecular structure, where individual oxygen atoms are bonded to each other by strong covalent bonds. Hence, a low amount of energy is required to overcome these weak forces and oxygen has a low boiling point. Therefore, at room temperature, oxygen is a gas. Oxygen difluoride is a colorless gas, condensable to a pale yellow liquid, with a slightly irritating odor. It is the most stable of the compounds of fluorine and oxygen, which include O,F,, O,F, and 0,F2 but nevertheless it is a strong oxidizing and fluorinating agent. Oxygen Difluoride is a colorless gas or a yellowish-brown liquid with a foul odor. Just to finally link Joseph's answer to the question, oxygen difluoride will thus change from liquid to solid state when chilled from -220°c to -230°c. The boiling point of oxygen is -182.96 degrees Celsius (under 1 standard atmosphere). This means at temperatures below that point, oxygen is a solid or a liquid, and at temperatures above that point, oxygen is a gas. So at -183 degrees Celsius, oxygen is a liquid.

Explanation:

3 0
3 years ago
a person measures the mass of an 8 cm3 block of brown sugar to be 12.9 g. What is the density of the brown sugar.
Maksim231197 [3]


From the information we have, this block of brown sugar  has a volume of 8cm3

The mass of the block is 12. 9 grams.

We need to find out the density of the sugar.

For a solid material the formula for calculating density is given as:

Density = mass / volume

Therefore we simply fit in the above given values into this formula, so:

Density = 12.9 / 8

Density = 1.61

Therefore the density of the block of sugar is 1.61g/ml


8 0
3 years ago
A car traveling with constantspeed travels 150 km in 7200s what is the speed of the car
kompoz [17]
The speed is 7,350km that's the speed of the car
5 0
3 years ago
Research Hypatia's achievements in the world
Dimas [21]

Answer:

See explanation

Explanation:

Hypatia is popular for her work in mathematics. She also did some work in the area of astronomy. Her well know work in mathematics is her ideas about conic sections.

She was born the Theon of Alexandria and she was a professional mathematician in her life time.

She was the greatest mathematician of her time and she was telling leader of the Neoplatonist school of philosophy in Alexandria. By so doing, she conquered the culture of sexism in her time.

She was trained by her father in mathematics and eventually replaced him. She was the last major mathematician in the Alexandrian tradition.

6 0
3 years ago
At 298 K, AHO = -1652 kJ/mol and ASO = 0.097 kJ/(K•mol). What is the Gibbs
Cloud [144]

Explanation:

here s the answer. Feel free to ask for more chem help

8 0
3 years ago
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