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2 years ago

List 5 spheres and give an example of something you would find in each sphere . Ill give 50 points

2 answers:

3 0

Hydrosphere, atmosphere, geosphere, biosphere, anthrosphere.

Hydrosphere: Liquid, vapour or ice.

Atmosphere: Oxygen.

Geosphere: Minerals.

Biosphere: Ecosystem.

Anthrosphere: Human habitats

Svetllana [295]2 years ago

3 0

Ice sphere - ice
chocolate sphere - chocolate
icecream sphere - icecream
sun - plasma
tire - air

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FREE BRAINLEIAST FOR FIRST GOGOGOGO!!

olga2289 [7]

Answer:

MEMEME

Explanation:

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3 years ago

A sodium hydroxide solution is made by mixing 8.70 g NaOH with 100 g of water. The resulting solution has a density of 1.087 g/m

Ahat [919]

Answer:

Mass fraction = 0.08004

Mole fraction = 0.0377

Explanation:

Given, Mass of NaOH = 8.70 g

Mass of solution = 8.70 + 100 g = 108.70 g

$Mass\ fraction\ of\ NaOH=\frac {8.70}{108.70}$ = 0.08004

Molar mass of NaOH = 39.997 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{8.70\ g}{39.997\ g/mol}$

$Moles\ of\ NaOH= 0.2175\ mol$

Given, Mass of water = 100 g

Molar mass of water = 18.0153 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{100\ g}{18.0153\ g/mol}$

$Moles\ of\ water= 5.5508\ mol$

So, according to definition of mole fraction:

$Mole\ fraction\ of\ NaOH=\frac {n_{NaOH}}{n_{NaOH}+n_{water}}$

$Mole\ fraction\ of\ NaOH=\frac {0.2175}{0.2175+5.5508}=0.0377$

3 0

3 years ago

Carbon has a neutral overall charge, an atomic mass of about 12 and an atomic number of 6. How many electrons does carbon have?

Artist 52 [7]

For the atom to be neutral, it must have the same number of electrons and protons. The aromic number indicates the number of protons. Since Carbon has 6 protons, it would have to have 6 electrons for it to be neutral

4 0

4 years ago

Read 2 more answers

A pH scale reading 13 indicates a ______

lukranit [14]

Answer:

A pH scale reading 13 indicates a strong base.

Explanation:

From my understanding:

1 -4 is a strong acid

4 - 7 is weak acid

7 - 9 is a weak base