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Natalija [7]
3 years ago
11

Which chemical change causes a cake to rise?

Chemistry
2 answers:
allochka39001 [22]3 years ago
8 0
The production of gas
Lady bird [3.3K]3 years ago
5 0

Answer:

production of a gas

Explanation:

What makes the cake grow is the action caused by yeast. When added in the dough the yeast undergoes a chemical transformation releasing carbon dioxide, for example from the reaction between sodium bicarbonate and monoacid phosphate. It is the carbon dioxide that makes the cake grow, making the dough light and soft. This reaction is favored by heating, so the use of frozen ingredients in the preparation of the dough can harm the end result.

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Solid copper is burned in oxygen gas to make solid copper (ii) oxide
Olin [163]

Answer:

The copper oxide can then react with the hydrogen gas to form the copper metal and water. When the funnel is removed from the hydrogen stream, the copper was still be warm enough to be oxidized by the air again.

Explanation:

8 0
4 years ago
Your lab partner dissolves 0.8392 g unknown bromide (Br-) sample into 210.08 mL of distilled water. 31.50 mL of the unknown brom
nikitadnepr [17]

Answer:2

Explanation:

2

4 0
3 years ago
What typefs) of bonding would be expected for each of the following materials: solid xenon, calcium fluoride (CaF, bronze, cadmi
klio [65]

Answer:

a) Solid Xenon - only van der waals  forces of attractions.

b) Calcium Fluoride - Ionic Bonding

c) Bronze - Metallic Bonding

d) Cadmium telluride - Covalent bonding with slight ionic character.

e) Rubber - Covalent bonding with some van der Waals forces of attraction.

f) Tungsten - Metallic bonding

Explanation:

a) Xenon is  a noble gas having fully filled stable electronic configuration.

So, there is no bonding between xenon atoms in solid xenon.

Only van der waals forces of attraction are found.

b) Calcium fluoride is an ionic compound formed from calcium (2+) and Fluoride ion.

c) Bronze is an alloy formed mainly from copper and tin which are both metals.

So, metallic bonding is  in found in bronze.

d) Cadmium telluride is formed form cadimium (2+) ion and Telluride ion with -2 charge.

So, it has slight ionic character with predominant covalent bonding

e) Rubber is a polymer which is formed from isoprene units.

So, covalent bonding exists along with van der waals forces.

f) Tungsten is a metal. So, metallic bonding is found between the atoms of tungsten.

8 0
3 years ago
Statement which represents following chemical reaction.
kvasek [131]

Answer:

vh uvyvuf7g8vu8x yo curxtu

Explanation:

gu.

3 0
3 years ago
Read 2 more answers
what is the boiling point of the solution resulted from the dissolving of 32.5g of NaCl in 250.0g of water?
suter [353]

Answer:

The boiling point of this solution is 102.28 °C

Explanation:

<u>Step 1:</u> Data given

Mass of Nacl = 32.5 grams

Molar mass of NaCl = 58.45 g/mol

Mass of Water = 250 grams

Boiling point of water = 100°C

<u>Step 2: </u>Calculate number of moles

Number of moles = mass of NaCl / Molar mass of NaCl

Number of moles = 32.5 grams /58.45 g/mol = 0.556 moles

<u>Step 3:</u> Calculate molality

Molality = Number of moles / mass of water

Molality = 0.556 moles / 0.250 kg of water

Molality = 2.224 molal

NaCl releases twice as many moles of ions, the total molality of this solution is also twice: 4.448 molal

Step 4: Calculate boiling point

dT =( 0.512 C / molal)*4.448 molal)

dT = 2.28

The boiling point of this solution is 100 °C + 2.28 °C = 102.28 °C

8 0
3 years ago
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