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4 years ago

Choose all the answers that apply.

Chemistry

1 answer:

Iteru [2.4K]4 years ago

7 0

Answer:

- is reused and recycled

- can dissolve more substances than any other liquid

Explanation:

Earth water is reused and recycles in the form of the water cycle (hydrological cycle). In this cycle, water from the earth surface evaporates in the atmosphere, cool and condense into cloud or snow and fall to the earth surface.

As a universal solvent, water can dissolve more substances than any other liquid. The polar arrangement of oxygen and hydrogen atom in the water molecules makes it excellent salt.

On Earth, ~2.5% is a freshwater whereas 97.5% is salt water. The pH of water differs for surface and salt water, i.e. neutral to alkaline respectively. Water molecules attract to other water molecules better than the other substances. Therefore, other options are incorrect.

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Which is a NOT a freshwater source on Earth?

cluponka [151]

Answer:

B the atmosphere it's not on earth and I'm pretty sure the atmosphere doesn't have water in

Explanation:

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3 years ago

Find the horizontal range of a projectile launched at 15 degrees to the horizontal with speed of 40m/s

vfiekz [6]

To Find :

The horizontal range of a projectile launched at 15 degrees to the horizontal with speed of 40 m/s.

Solution :

The horizontal range of a projectile is given by :

$R = \dfrac{u^2 sin 2\theta}{g}$ ( Here, g is acceleration due to gravity = 10 m/s² )

Putting all value in above equation :

$R = \dfrac{40^2 \times sin (2 \times 15)}{10} \ m\\\\R = \dfrac{1600 \times 1}{2\times 10} \ m\\\\R = 80 \ m$

Therefore, the horizontal range of projectile is 80 m.

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3 years ago

All of the following can be recycled except

Lunna [17]

Compact fluorescent bulbs because they made out of glass that will break and will dye and then they can't be used again

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4 years ago

typical seawarer contains 2.7g of salt (sodium chloride,Nacl)per 100ml (100*10-3L).what is the molarity of Nacl in the ocean?

faust18 [17]

Answer:

Molarity = 0.5 M

Explanation:

Given data:

Mass of NaCl = 2.7 g

Volume = 100 mL(100×10⁻³L)

Molarity of solution = ?

Solution:

Formula:

Molarity = number of moles / volume in litter

Number of moles:

Number of moles = mass/ molar mass

Number of moles = 2.7 g/ 58.5 g/mol

Number of moles = 0.05 mol

Molarity = number of moles / volume in litte

Molarity = 0.05 mol / 100×10⁻³L

Molarity = 0.5 M

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3 years ago

From the time a drug is discovered, a drug is given this name which is assigned by the International Union of Pure and Applied C

sweet-ann [11.9K]

Answer:

A. Chemical name

Explanation:

The Chemical Name is the name generated by applying the naming conventions of the International Union of Pure and Applied Chemistry (IUPAC). The correct names of compounds contained in drug products can be formed by implementing these rules

7 0

4 years ago