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2 years ago

How is a mixture such as a plate of pasta different from a mixture such as air

Chemistry

1 answer:

stealth61 [152]2 years ago

6 0

Answer:

Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood). Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous

HOPE THIS HELPS HAVE A GREAT DAY!!~

Explanation:

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Which mixture is classified as a solution?

svlad2 [7]

Salt water is considered to be a solution

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3 years ago

What is the kinetic energy in kJ of 1 mole of water molecules (mass=18) if the average velocity is 590 m/s (1300 mph)

zubka84 [21]

Answer:

= 3132.9 Joules

Explanation:

Kinetic energy is the energy possessed by a body when in motion.
Kinetic energy is calculated by the formula; K.E = 1/2 mV², where m is the mass of the body or object, and V is the velocity.

Therefore kinetic energy depends on the mass and the velocity of the body or the object in motion.

In this case;

Kinetic energy = 0.5 × 0.018 kg × 590²

<u>= 3132.9 Joules</u>

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3 years ago

Complete the statement.<br> Ethanol is<br> an elementary substance<br> a compound

Talja [164]

Answer:

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Explanation:

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2 years ago

the trend for ionization energy is a general increase from left to right across a period. However phosphorus is found to have hi

dimaraw [331]

Since phosphorus is in the 5th group it has the ability to gain or lose electrons

4 0

3 years ago

A mixture of 5L of H2 and 3L O2 reacts to form H2O (g) at constant T and P .Find the

slamgirl [31]

The volume of H₂O = 5 L

<h3>Further explanation</h3>

Given

5L of H₂ and 3L O₂

Reaction

2H₂ (g) + O₂(g) ⇒2H₂O(g)

Required

The volume of H₂O

Solution

Avogadro's hypothesis:

<em>In the same T,P and V, the gas contains the same number of molecules </em>

So the ratio of gas volume will be equal to the ratio of gas moles

mol H₂ = 5, mol O₂ = 3

Find limiting reactants

From equation, mol ratio H₂ : O₂ = 2 : 1, so :

$\tt H_2\div O_2=\dfrac{mol~H_2}{coefficient}\div \dfrac{mol~O_2}{coefficient}\\\\=\dfrac{5}{2}\div \dfrac{3}{1}=2.5\div 3\rightarrow H_2~limiting~reactant(smaller~ratio)$

Find volume H₂O

mol H₂O based on mol H₂, and from equation mol ratio H₂ : H₂O=2 : 2, so mol H₂O = 5 mol and the volume also 5 L

4 0

3 years ago