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Nataly [62]
3 years ago
7

List any two uses of Brass , Bronze , Sulphur , Iodine

Chemistry
1 answer:
NikAS [45]3 years ago
5 0

BRASS :It is easy to form into various shapes, a good conductor of heat, and generally resistant to corrosion from salt water. 1 pipes and 2 tubes, 3 screws, 4 cartridge casings for firearms.

BRONZE :for bearings because of its friction properties, and as 1 musical instruments ,2 and medals

Sulphur :1 making car batteries, 2 fertilizer

IODINE :1 Iodine regulates skin moisture levels and aids in the healing of cuts and scars through cellular regeneration. 2 Iodine also regulates the hormones responsible for acne breakouts.3 Treating thyroid cancer.

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Nitrogen has a half life of 10 days. If you have a 75 gram sample how much is remaining after 20 days ?​
CaHeK987 [17]
There is 9.375 g of nitrogen. This is because when a half-life passes, the mass becomes 2 times less. Since two half-lives have passed, you need to divide by 4.
3 0
3 years ago
The fastest man can run 100 meters in 10 seconds. What is his speed in miles per hour?
Anestetic [448]

Answer:22.37 mph

Explanation:

100 meters = 0.062137 miles

Assume constant speed over the distance.

0.062137 miles in 10 sec

0.372822 miles in 60 sec = 1 minute

22.36932 miles in 60 minutes

22.37 mph rounded to 2 decimals

8 0
2 years ago
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Your teacher gives you a black powder. When you dissolve the powder in water, you see red particles that float to the top, black
ELEN [110]

Answer : The correct option is, mixture

Explanation :

Mixture : It is defined as the substance that is made by the combination of two or more different components.

Pure substance : It is defined as a substance that is made by the combination of only one type of atom or only one type of molecule.

Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Element : It is a pure substance which is composed of atoms of similar elements.

According to the definition of mixture, black powder is a mixture because it is made by the combination of red particles that float to the top, black particles that sink to the bottom and a green color liquid.

Hence, the correct option is, mixture

3 0
3 years ago
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Electron Configuration of Mercury?
icang [17]
[Xe] 4f14 5d10 6s2
I don’t know how to explain it but that’s what I got
4 0
3 years ago
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Which of the following would have the best thermal insulation properties?
marishachu [46]

Answer:

D. A plastic cup

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