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3 years ago

PLSSSS HELPSSSSSSSSSS PLSSSSSSSSSSSSSSS

Chemistry

1 answer:

nika2105 [10]3 years ago

5 0

Answer:

Hi myself Shrushtee.

Explanation:

Ocean water is constantly moving, and not only in the form of waves and tides. Ocean currents flow like vast rivers, sweeping along predictable paths. Some ocean currents flow at the surface; others flow deep within water. ... Tides contribute to coastal currents that travel short distances.

Please mark me as brainleist.

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Can an ion be either positive or negative? True or False

vekshin1

Answer:

True

Explanation:

3 0

3 years ago

The solubility of o2 at 20c is 1.38 x10^-3. the partial presure of o2 in the air at sea level is 0.27 atm. using henery;s law, c

netineya [11]

Answer: The solubility of oxygen at 682 torr is $4.58\times 10^{-3}M$

Explanation:

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{A}=K_H\times p_{A}$

Or,

$\frac{C_{1}}{C_{2}}=\frac{p_{1}}{p_2}$

where,

$C_1\text{ and }p_1$ are the initial concentration and partial pressure of oxygen gas

$C_2\text{ and }p_2$ are the final concentration and partial pressure of oxygen gas

We are given:

Conversion factor used: 1 atm = 760 torr

$C_1=1.38\times 10^{-3}M\\p_1=0.27atm\\C_2=?\\p_2=682torr=0.897atm$

Putting values in above equation, we get:

$\frac{1.38\times 10^{-3}}{C_2}=\frac{0.27atm}{0.897atm}\\\\C_2=\frac{1.38\times 10^{-3}\times 0.897atm}{0.27atm}=4.58\times 10^{-3}M$

Hence, the solubility of oxygen gas at 628 torr is $4.58\times 10^{-3}M$

4 0

3 years ago

Pizza is an example of a homogeneous mixture.

Kay [80]

No its a example of heterogeneous mixture

4 0

4 years ago

What did Dalton’s atomic theory teach

sweet-ann [11.9K]

Answer:

All matter is composed of atoms.

Atoms are not destructible.

Compounds formation occur by the combination of one or different types of atoms

In the chemical reactions, atoms are rearranged.

The atom of the same elements are similar in size and properties and the Atoms of the different elements are different in size and properties.

Explanation:

John Dalton has developed the Dalton atomic theory.

Dalton atomic theory was the first to explain that all matters composed of atoms and its properties, the atom as the smallest particle which cannot be destroyed and damaged.

This theory was based on the law of conservation of mass and law of constant composition.

His theory was accepted by many scientists.

6 0

4 years ago

Read 2 more answers

What is the value of 100cm^3 in dm^3

attashe74 [19]

Answer:

0.1 dm³.

Explanation:

To obtain the value of 100 cm³ in dm³, do the following:

Recall:

1 cm³ = 0.001 dm³

Therefore,

100 cm³ = 100 cm³ × 0.001 dm³ / 1 cm³

100 cm³ = 0.1 dm³

Thus, 100 cm³ is equivalent to 0.1 dm³.

4 0

3 years ago