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elixir [45]
3 years ago
5

Two jars are placed inside an insulated box. One jar contains ice water and the other contains hot soup. What will happen to the

two liquids? Question 6 options: Both the hot soup and the ice water will gain heat. The hot soup will gain heat and the ice water will lose heat The hot soup will lose heat and the ice water will gain heat. Both the hot soup and the ice water will lose heat
Chemistry
1 answer:
pickupchik [31]3 years ago
3 0
Answer is: t<span>he hot soup will lose heat and the ice water will gain heat.
</span><span>Heat spontaneously flows from a hotter to a colder body.
</span>The thermal radiation<span> is </span>electromagnetic radiation<span> generated by the </span>thermal motion<span> of </span>charged particles<span> in </span>matter (in this case from the hot soup to the cold water). 
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How many formula units make up 12.8 g of magnesium chloride (MgCl2)? Express the number of formula units numerically.
Cloud [144]
<h3>Answer:</h3>

8.09 × 10²² formula units

<h3>Explanation:</h3>

Mass of MgCl₂ is 12.8 g

Required to calculate the formula units

1 mole of a compound contains the Avogadro's number formula units

That is;

1 mole = 6.022 × 10²³ formula units

<h3>Step 1: Calculate the moles of MgCl₂ in 12.8 g </h3>

The molar mass of MgCl₂ is 95.211 g/mol

Number of moles = Mass ÷ molar mass

Moles of MgCl₂ = 12.8 g ÷ 95.211 g/mol

                          = 0.1344 mole

<h3>Step 2: Calculate the formula units of MgCl₂</h3>

1 mole =  6.022 × 10²³ formula units

Therefore;

Number of formula units = Moles × 6.022 × 10²³ formula units

                                    = 0.1344 mole × 6.022 × 10²³ formula units

                                     = 8.09 × 10²² formula units

Therefore, there are 8.09 × 10²² formula units in 12.8 g of MgCl₂

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Balance the following equation; then determine how many grams of CO2 will be produced when 40.0 mol of CO reacts with Fe2O3.
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      1           :          3         :            2      :         3

   13.3       <---     40    ------> 26.6      --->     40    ( mol)

n = m/M

m CO2 = n.M = 13.3  .    40   =  532 ( g)

p/s : i hope that this will help  ( cause i'm not really good at english :}}} )

6 0
3 years ago
I need help with this question please!!
mariarad [96]
The answer is B

Hope this helped. Good luck!
3 0
3 years ago
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