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Scrat [10]
3 years ago
10

Comets are mixtures of frozen gases, rocks, and dust. True or False?

Chemistry
1 answer:
Alika [10]3 years ago
8 0
Hi, I am Rosy67 and im here to help.

I have read your sentence and i believe the answer is the following;

True.

Hope this could help!!!!!

~Rosy67

(PS, Can i have brainliest? Im trying to level up) :) *_*
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Archimedes used what method to find the volume of the golden crown?
Semenov [28]
It will be the Displacement method
6 0
3 years ago
Which of the following is accurate in describing the placement and classification of iodine?
fenix001 [56]
You can answer this question by only searching the element in the periodic table.

The atomic number of iodine, I, is 53. It is placed in the column 17 (this is the Group) and row 5 (this is the Period).

The conclusion is that the iodine is located in Period 5, Group 17, and is classified as a nonmetal.
4 0
3 years ago
Platinum crystallizes with the face-centered cubic unit cell. The radius of a platinum atom is 139 pm. Calculate the edge length
horrorfan [7]

Answer:

Length = 393pm, Density = 21.3 g/cm^3.

Explanation:

From the question above, we have the following parameters or data which is going to aid in solving the above Question.

=> The radius of a platinum atom = 139 pm.

Therefore, the length can be calculated by making use of the formula given below:

Length = 2 √( 2r) = 2 × √ (2 × 139 × 10^-12m ) = 393 × 10^-10 m = 393pm.

The density can be calculated by making use of the chemical formula given below:

Density = mass ÷ volume = (195.064/ 6.02 × 10^23) ÷ (3.93 × 10^-10/ 10^-2) = 21.3 g/cm^3.

3 0
3 years ago
Solution of known concentration is called​
Vesna [10]

Answer:

standard solution

Explanation:

4 0
2 years ago
Why doesn't glass exhibit crystalline form
ser-zykov [4K]
It doesn't have a 3 dimensional pattern
7 0
3 years ago
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