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erik [133]
4 years ago
9

A 25.3-8 sample of an unknown compound contains

Chemistry
1 answer:
lys-0071 [83]4 years ago
6 0

Answer: wired but ok

Explanation:you need help

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Need QUICK ANSWERS!!!!!!!!!!!!!!!!!!
nadya68 [22]

Answer: 125.0964 g

Explanation:

Density = mass/volume

Density = 2.7 gcm-3

Volume = 2.7*14.3 = 46.332

Mass=?

Mass= density*volume

= 2.7 x 46.332 = 125.0964 g

Hope this helps! :)

7 0
3 years ago
Can someone tell me how to identify the number of significant figures?
igor_vitrenko [27]

Answer:

Non-zero digits are always significant.

Any zeros between two significant digits are significant.

A final zero or trailing zeros in the decimal portion ONLY are significant. If a number ends in zeros to the right of the decimal point, those zeros are significant.

Explanation:

1.138 has 4 significant figures, which are 1, 1, 3 and 8. The numbers after the decimal point are decimals and are significant figures.

8 0
3 years ago
A) week 1<br><br> b) week 2<br><br> c) week 3<br><br> d) week 4
nalin [4]
Try c I think is the most accurate one
4 0
3 years ago
Read 2 more answers
Pls complete the table with the correct answer ​
nalin [4]

Answer:

The correct answer is :

Natural fibres: these fibers are found naturally in the environment such as cotton, hemp or wool, all are made naturally found fibers.

sr. no.      name              type

1 Cotton natural

2 Linen natural

3 Silk natural

4 Wool natural

    5.     Hemp                natural

Artificial fibres: made from the polymerization of their monomer unit for example polyester made from coal and petroleum products.

sr. no.      name              type

1 Polyester artificial

2 Rayon artificial

3 Spandex artificial

4 Acrylic artificial

    5.     microfibers         artificial

6 0
4 years ago
Had beryllium and calcium already been discovered
Lina20 [59]

Answer:

Yes

Beryllium is a chemical element with the symbol Be and atomic number 4. It is a steel-gray, strong, lightweight and brittle alkaline earth metal. ... Notable gemstones high in beryllium include beryl (aquamarine, emerald) and chrysoberyl.

Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth.

3 0
3 years ago
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