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3 years ago

A mineral that contains silicon and oxygen

1 answer:

3 0

<span>Hey there!
Great question:)

Answer:Silicates, this is a mineral that contains silicon and oxygen!

I hope this helps;)
</span>

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There are on average 43 g of sugar and 355 mL can of soda please calculate the molarity of sugar in the can of soda the molar ma

vfiekz [6]

Explanation:

Given :

Amount of solute - sucrose (C12H22O11) = 41 g

Amount of solvent -soda = 355-mL

Molarity of the solution with respect to sucrose= ?

Molarity(M) is a unit of concentration measuring the number of moles of a solute per liter of solution. The SI unit of molarity is mol/L.

Formula to find the molarity of solution :

Molarity =

Amount of solvent is given in mL, let’s convert to L :

1 L = 1000 mL

Therefore, 355 mL in L will be :

= 0.355 L

We have the amount of solute in g, let’s calculate the number of moles first :

Number of moles (n) =

Molar mass of C12H22O11 = 342.29 g/mol.

Therefore, n =

= 0.119 moles.

8 0

3 years ago

Compared with halogens, the alkali metals in the same period has

Rufina [12.5K]

Alkali metals have the lowest electronegativities, while halogens have the highest.

3 0

3 years ago

The atomic number of an atom is always equal to the number of its what ??

Marianna [84]

The answer is protons and electrons! Hope this helps :D

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3 years ago

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A 10-liter container has 2 moles of oxygen at a pressure of 92 kpa. The effective speed (rms) of the oxygen molecules in the gas

bezimeni [28]

The effective speed (rms) of the oxygen gas is 293.68 m/s.

<h3></h3><h3>What is Root-mean-square velocity?</h3>

Root mean square velocity is the square root of the mean of squares of the velocity of individual gas molecules

$v_{rms}=\sqrt[]{\frac{3RT}{M} }$

<em>where </em>R = universal gas constant

M = molar mass of the gas in kg/mol

T = temperature in Kelvin

According to the ideal gas law,

PV = nRT

RT = $\frac{PV}{n}$

Substitute in the rms velocity formula,

$v_{rms} = \sqrt[]{\frac{3PV}{nM} }$

P = 92 kPa, V = 10 L, n = 2 moles and M = 32 x 10⁻³ kg/mol

$v_{rms} = \sqrt[]{\frac{3\times92\times10}{2\times32\times10^-^3} }$

=293.68 m/s

Thus, the effective speed (rms) of O₂ gas is 293.68 m/s.

Learn more about Root-mean-square velocity:

brainly.com/question/15995507

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1 year ago

Why is Mars red? Please describe your answer.

kupik [55]

Answer:

the reason why Mars is red is because of its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue

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3 years ago