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alexgriva [62]
3 years ago
9

Is bread rising a chemical change or physical change

Chemistry
2 answers:
Sphinxa [80]3 years ago
6 0

Answer:

There is definitely a chemical change taking place during baking, and that is the conversion of baking soda (sodium bicarbonate, NaHCO3) to carbon dioxide (CO2).

Explanation:

Hope this helps :)

Ivanshal [37]3 years ago
3 0

Answer:

Chemical. Things within the bread are having chemical reactions, such as the yeast reacting to the heat and baking.

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Pls help me I don’t know what to dooooo
Ivan
Molarity = moles of solute/volume of solution in liters.

The solute here is NaCl, of which we have 46.5 g. To calculate the molarity of an NaCl solution, we need to know the number of moles of NaCl. To convert from grams to moles, we divide the mass by the molar mass of NaCl. The molar mass of NaCl is the sum of the atomic masses of Na and Cl: 23 amu + 35 amu = 58 amu. For our purposes, we can regard amu as equivalent to grams/mole.

(46.5 g)/(58 g/mol) = 0.8017 moles NaCl.

Now that we know both the number of moles of our NaCl solute and the volume of the solution, we can calculate the molarity:

(0.8017 moles NaCl)/(2.2 L) = 0.364 M.
5 0
3 years ago
Is wine a homogenous mixure
Fiesta28 [93]

Tap water and rain water are both homogeneous, even though they may have different levels of dissolved minerals and gases. A bottle of alcohol is a man-made homogeneous mixture, from a fine Italian wine to a glass of Scotch whisky. In the human body, blood plasma is an example of a homogeneous mixture.

4 0
2 years ago
PLZ HELP MARK BRAINLIEST 30 POINTS 1) Find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) An 8 ba
finlep [7]

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5 0
3 years ago
You weigh a 24K gold chain and find that it weighs 400 grams. Determine home many moles of gold atoms you have
makkiz [27]

Answer:

                     2.03 moles of Gold

Explanation:

                     Gold is one of the most precious metal metal used in many applications and mainly as a jewellery. In terms of purity it is categorized in Karats. 24 Karat is considered the purest Gold (i.e. 100 % Gold) while other Karats (14, 18, 22 e.t.c) are alloys with other metals and gyms.

Data Given:

                 Mass of Gold  =  400 g

                 A.Mass of Gold  =  196.97 g.mol⁻¹

Calculate Moles of Gold as,

                              Moles  =  Mass ÷ M.Mass

Putting values,

                              Moles  =  400 g ÷ 196.97 g.mol⁻¹

                              Moles  =  2.03 moles of Gold

4 0
2 years ago
Differentiate between the following terms.
Lorico [155]

Answer:

a.reducing agent reduces other elements and make itself oxidized

b.Oxidizing agent reduces itself and make other element oxidized

c.Oxidation state is apparent charge on an atom

Explanation:

7 0
3 years ago
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