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4 years ago

if silicon bonded with three oxygen atoms, how might the crystalline structures of silicate minerals be different?

1 answer:

5 0

If silicon bonded with three oxygen atoms, the crystalline structure called framework will be three dimensional and the silicate minerals will become lighter.

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A sample of iron has a mass of 35 g. When it is placed in a

Dmitry [639]

Answer:

7.95g/cm^3

Explanation:

density= mass÷volume

6 0

3 years ago

A student heats a sample of hydrate once, and the mass of the sample and the evaporating dish is 16.428 g. After a second heatin

jolli1 [7]

Answer:

12.371 g

Explanation:

Given :

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{evaporating\ dish}+m_{First\ heated\ sample}=16.428\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

Mass of salt hydrate:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{Hydrate\ sample}=25.637-m_{evaporating\ dish}\ g=25.637-1.135\ g=24.502\ g$

Mass of salt anhydrous:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

$m_{Second\ heated\ sample}=m_{salt\ anhydrous}=13.266-m_{evaporating\ dish}\ g=13.266-1.135\ g=12.131\ g$

Mass of water:

$m_{water}=m_{Hydrate\ sample}-m_{salt\ anhydrous}=24.502-12.131\ g=12.371\ g$

$m_{water}=12.371\ g$

4 0

4 years ago

A chemical engineer has determined by measurements that there are 69.0 moles of hydrogen in a sample of methyl tert-butyl ether.

Juli2301 [7.4K]

<span>5.75 moles The formula for methyl tert-butyl ether is (CH3)3COCH3, so a single molecule has 5 carbon, 12 hydrogen, and 1 oxygen atoms. So for every 12 moles of hydrogen, there's 1 mole of oxygen. So simply divide the number of moles of hydrogen by 12 to get the number of moles of oxygen. 69.0 / 12 = 5.75 Therefore there's 5.75 moles of oxygen in the sample.</span>

3 0

3 years ago

What is the mass of 1 mole in<br> ZnCl2

DENIUS [597]

Answer:

136.286 g/mol

Explanation:

good luck

4 0

3 years ago

Imagine that a single cell below goes through four cell divisions. How many cells are produced? To find out, draw the parent cel

Lisa [10]

16 cells are produced from a single parent cell after the fourth division of the cell.

In biology, the smallest unit can live on its own and that makes up all living organisms and the tissues of the body.

In mitosis type of cell division, one parent cell is divided into two same or different daughter cells. In this way, in the first division, two cells are produced from single parent cells and in the second division, four daughter cells are produced. In the third division, 8 cells are produced from 4 parent cells and in the fourth division, 16 cells are formed from 8 cells.

So we can conclude that 16 cells are produced from a single parent cell after the fourth division of the cell.

Learn more about cell here:

brainly.com/question/13123319

#SPJ1

4 0

2 years ago