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Wewaii [24]
1 year ago
7

If after heating the reaction between magnesium and hydrochloric acid, the mass of the magnesium chloride and beaker is measured

to be 37.83 g, what is the mass of magnesium chloride that was formed, if the mass of the beaker is 33.95 g. Enter answer to two decimal places
Chemistry
1 answer:
Allushta [10]1 year ago
7 0

Since the beaker was heated we can asume that only magnesium cloride is left in the beaker, therfore the difference between the beaker with magnesium chloride and the empty beaker give the mass of magnisium chloride:

\text{mass MgCl}_2=massbeakerwithMgCl_2-mass\text{ emprty beaker =37.83 g - 33.95g = 3.8}8g

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Monica [59]

Answer:

The mass of a pure substance represents a specific number of pure substance 'molecules', as defined by molecular weight. The relative atomic mass (atomic weight) in grams/mole (g/mol) is the molar mass of a substance, which means it is the mass of one mole of that substance.

Explanation:

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8 0
3 years ago
What elements can on with other elements to form covalent bonds
Alenkinab [10]

Answer:

Non metals join to form covalent bond.

Explanation:

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

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In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.

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7 0
3 years ago
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sergejj [24]

Answer:

They blow away from poles to the equator.

Explanation:

Hello,

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6 0
3 years ago
Read 2 more answers
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-Dominant- [34]

Answer:

D ) feedback

Explanation:

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The given condition is an example of negative feedback because in negative feedback, any change in the input is opposed by generating an output. Here also,  warming up of house (change in one direction) allows the air conditioning unit turns  on and it gives cool air (opposing that change).

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4 0
3 years ago
If 448.85 mg of KOH is dissolved in 400 ml of water, what will be the pH of the solution?
emmasim [6.3K]
I have provided the steps and solution within the attachment. The pH of the solution would be 12.30, this indicates that the solution is basic, as a higher value of pH indicates presence of more hydroxide ions and less of hydrogen ions in the solution.

8 0
3 years ago
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