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4 years ago

Difference btw cations and anions ?

Chemistry

1 answer:

dezoksy [38]4 years ago

4 0

Answer:

The difference between a cation and an anion is the net electrical charge of the ion. Ions are atoms or molecules which have gained or lost one or more valencee electron giving the ion a net positive or negative charge. Cations are ions with a net positive charge.

Explanation:

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Help please!!!!!!!!!!!!

pav-90 [236]

Answer:

0.004953

Explanation:

8 0

3 years ago

How much MgO is made when 12Kg of Mg is completely burned in air?

Flauer [41]

Answer:

Mass = 20,000 g

Explanation:

Given data:

Mass of MgO formed = ?

Mass of Mg react = 12 Kg (12 Kg × 1000/1 Kg = 12000 g)

Solution:

Chemical equation:

2Mg + O₂ → 2MgO

Number of moles of Mg:

Number of moles = mass/molar mass

Number of moles = 12000 g/ 24 g/mol

Number of moles = 500 mol

Now we will compare the moles of Mg and MgO.

Mg : MgO

2 : 2

500 : 500

Mass of MgO:

Mass = number of moles × molar mass

Mass = 500 mol × 40 g/mol

Mass = 20,000 g

8 0

3 years ago

Does the shape, size, or temperature of matter affect its density?

aleksley [76]

Shape and size doesn't affect the density of an object but temperature does affect the density of an object because the molecules act differently in different temps.

7 0

3 years ago

using the soubility curve what is the solubilityof nh4cl in 10 mL of water at a temperature of 60 degrees Celsius

lukranit [14]

Answer:

Please, see attached two figures:

The first figure shows the solutility curves for several soluts in water, which is needed to answer the question.

The second figure shows the reading of the solutiblity of NH₄Cl at a temperature of 60°C.

Answer: 5.5g

Explanation:

The red arrow on the second attachement shows how you must go vertically from the temperature of 60ºC on the horizontal axis, up to intersecting curve for the solubility of NH₄Cl.

From there, you must move horizontally to the left (green arrow) to reach the vertical axis and read the solubility: the reading is about in the middle of the marks for 50 and 60 grams of solute per 100 grams of water: that is 55 grams of grams of solute per 100 grams of water.

Assuming density 1.0 g/mol for water, 10 mL of water is:

$10mL\times 1.0g/mL=10g$

Thus, the solutibily is:

$10gWater\times 55gNH_4Cl/100gWater=5.5gNH_4Cl$

5 0

3 years ago

Could gold form a diatomic molecule?

olasank [31]

I think so. You should check the Periodic Table. ;-)

3 0

3 years ago