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poizon [28]
4 years ago
14

Imagine that you combine lemon juice with baking soda in a glass. You see gas bubbles forming along the sides of the glass. How

are the chemical properties of the gas different from the chemical properties of the baking soda and lemon juice?
Chemistry
2 answers:
olasank [31]4 years ago
6 0
<span>The gas that is formed is a different state of matter from the baking soda and lemon juice. The lemon juice has a different odor or smell than the gas. There is no color in the gas, while the lemon juice is yellow, and the baking soda is white.
^^^^^ hope this helps you! :) </span>
Sunny_sXe [5.5K]4 years ago
6 0

Answer:

Gas released in this process is a totally different chemical substance in comparison to the baking soda and lemon juice. It should be Carbon Dioxide formed during the reaction.

Explanation:

We have a baking soda in a glass: it is composed of water and baking soda (NaHCO3). We have lemon juice, its main component is the citric acid (H3C6H5O7). After that, both liquids are mixed and an acid-base reaction occurs.

The reaction releases gas, which should be carbon dioxide (CO2), according to this reaction:

H3C6H5O7 (aq) + 3 NaHCO3 (aq) → 3 CO2 (g) +3H2O (l) + Na3C6H5O7 (aq)

The products of this reaction are Water (H2O) a Salt and carbon dioxide. As carbon dioxide is in the gas phase, it will be released from the liquid mixture as bubbles.

Finally, we can conclude that Gas released in this process is a totally different chemical substance in comparison to the baking soda and lemon juice. It should be Carbon Dioxide formed during the reaction.  

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1) endothermic
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4 0
3 years ago
Gold cylinder has a mass of 75 g and a specific heat of 0.129J/G degrees Celsius it is heated to 65°C and then put in 500 g of w
nadezda [96]
<h3>Answer:</h3>

89.88° C

<h3>Explanation:</h3>

<u>We are given;</u>

  • Mass of gold cylinder as 75 g
  • specific heat of gold is 0.129 J/g°C
  • Initial temperature of gold cylinder is 65°C
  • Mass of water is 500 g
  • Initial temperature of water is 90 °C

We are required to calculate the final temperature;

  • We know that Quantity of heat is given by the product of mass, specific heat capacity and change in temperature.
  • That is, Q = m × c × ΔT
<h3>Step 1: Calculate the quantity of heat absorbed by the Gold cylinder</h3>

Assuming the final temperature is X° C

Then; ΔT = (X-65)°C

Therefore;

Q = 75 g × 0.129 J/g°C × (X-65)°C

   = 9.675X - 628.875 Joules

<h3>Step 2: Calculate the quantity of heat released by water</h3>

Taking the final temperature as X° C

Change in temperature, ΔT = (90 - X)° C

Specific heat capacity of water is 4.184 J/g°C

Therefore;

Q = 500 g × 4.184 J/g°C × (90 - X)° C

  = 188,280 -2092X joules

<h3>Step 3: Calculate the final temperature, X°C</h3>

we know that the heat gained by gold cylinder is equal to the heat released by water.

9.675X - 628.875 Joules = 188,280 -2092X joules

2101.675 X = 188908.875

              X = 89.88° C

Thus, the final temperature is 89.88° C

3 0
3 years ago
What is the definition of a physical property of matter?
Bezzdna [24]
<span>Physical properties are any properties of matter which can be perceived or observed without changing the chemical identity of the sample.</span>
7 0
3 years ago
0.00781 g = kg<br> helppppp
lapo4ka [179]

Answer:  The answer is:  " 7.81 kg " .

___________________________________________________

Explanation:

___________________________________________________

Note the exact conversion:   1000 g = 1 kg ;

0.00781 g = ? kg :

So:  To convert "0.0781 g" ; to "units in kg" ;

            →  we multiply the value:  0.00781 g ;  by "1000" ;

So:  Given:  " 0.00781 g " ;  

           →  we move the decimal point "3 (three) spaces forward" ;

   to get:  " 7.81 kg " .

___________________________________________________

Hope this helps!

       Wishing you the best in your academic pursuits

              — and within the "Brainly" community!

___________________________________________________

4 0
3 years ago
Read 2 more answers
What is the pH of a solution with a (H+] = 0.80 M? *Please round your answer to the appropriate number of significant figures. Y
bezimeni [28]

Answer:

The pH of a solution with a (H+] = 0.80 M is 9.6 e^{-2}

Explanation:

As we know

pH = -[log H+]

Substituting the value of H+ ion concentration in the above equation, we get -

pH = -log [0.80]

pH = -[-0.096] = 0.096  = 9.6 e^{-2}

8 0
3 years ago
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