All categories

3 years ago

Question 3

Chemistry

1 answer:

algol [13]3 years ago

6 0

Answer:

Curd is acidic in nature, because an acidic substance has less value of pH. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Answer: By making the milk more alkaline, it takes more time to turn into curd.

You might be interested in

How many grams of sodium azide are required to form 16.55g of nitrogen gas in

MrRissso [65]

Answer:

16.8128 grams of sodium azide is needed

Explanation:

2NaN3 = 2Na + 3N2

molar mass of NaN3 =

$2(11 + (7 \times 3) = 64$

molar mass of N2

$3(7 \times 2) = 42$

moles of N2 =

moles=mass/R.F.M

16.55÷42 = 0.3940

mole ratio=

2NaN3 : 3N2

3 = 0.3940

2=?

$0.394. \times 2 \div 3 = 0.2627$

Mass of sodium azide =64×0.2627

=16.8126

6 0

3 years ago

What did schrodinger discover? How was his model different from the Bohr model?

dlinn [17]

It doesn't define the direct path of a electron.

7 0

4 years ago

What could you predict about a methane molecule that would most likely be made by using both the quantum model of the atom and J

Svetlanka [38]

By using the quantum model of the atom and John Dalton's model you can predict that the methane molecule will most likely be made up of Hydrogen and Carbon.

5 0

3 years ago

(True or

marysya [2.9K]

The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element
this statement is true

3 0

3 years ago

1. What causes water's low vapor pressure? (1 point)

arsen [322]

<span>1. What causes water's low vapor pressure? (1 point)
dispersion forces
dispersion forces
covalent bonding
hydrogen bonding
ionic attractions
2. Which of the following substances is the most soluble in water? (1 point)
sodium chloride
methane
bromine
carbon
3. Which of the following substances is NOT an electrolyte? (1 point)
KCl
CCl4
LiCl
Na2SO4
4. Which of the following mixture types can be filtered to remove solute? (1 point)
suspensions only
colloids only
suspensions and colloids
suspensions and solutions
5. Which of the following mixtures is NOT a colloid? (1 point)
fog
milk
paint
sugar water
6. Which of the following types of mixtures exhibit the Tyndall effect? (1 point)
suspensions and colloids
suspensions and solutions
colloids and solutions
colloids only
7. An emulsyfying agent is typically characterized by having ____. (1 point)
one polar end
one nonpolar end
one nonpolar end
two polar ends
one polar end and one nonpolar end</span>

5 0

4 years ago