Lower the melting point
Explanation:
Salts helps to melt road by lowering the melting point. It acts as an impurity and generally, impurities low the melting point of substances.
Salts are used as an antifreeze.
- Water freezes at 0°C and forms ice/snow which can impede human and vehicular movement.
- When salt is added, it causes the depression of the freezing point by lowering it further.
- The freezing point is pegged back at -6°C.
- This way it takes more low temperature to freeze the water.
- The salt acts as an impurity and causes the depression of melting point and widening of the melting range.
learn more:
Matter brainly.com/question/10972073
#learnwithBrainly
Answer:true
Explanation:
In covalent bond, lone pair of electrons are shared by the reacting species inorder to achieve a stable duplet or octet condition.as a result, molecules and not ions are formed
Answer:
Formation of Gas
Explanation:
The solid Carbon Dioxide warms it sublimates to gas. With limited room for the gas to expand, the pressure in the bottle increases.
274 mL H3 O+ and fully neutralized
It will take one teaspoon of Mg(OH)2 to completely neutralize 2.00×10^2mL of H3O+.
<h3>What is the purpose of milk of magnesia?</h3>
- For a brief period of time, this medicine is used to relieve sporadic constipation.
- It is an osmotic laxative, which means that it works by drawing water into the intestines, which aids in causing bowel movement.
<h3>What dosage of milk of magnesia is recommended for constipation?</h3>
- Take Milk of Magnesia once day, preferably before bed, in divided doses, or as prescribed by a physician.
- suggested dosage: 30 mL to 60 mL for adults and kids 12 years of age and older. 15 mL to 30 mL for children aged 6 to 11 years.
learn more about milk of magnesia here
brainly.com/question/15178597
#SPJ4
the question you are looking for is
People often take milk of magnesia to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 teaspoon, which contains 4.00x 10^{2} mg of Mg(OH)_2. What volume of an HCl solution with a pH of 1.3 can be neutralized by one dose of milk of magnesia? If the stomach contains 2.00x10^{2}mL of pH 1.3 solution, is all the acid neutralized? If not, what fraction is neutralized?
Answer:
in theoretical yield are obtained 2.61 g of aspirin from 2.0 g of salicylic acid and 5 mL of acetic anhydride
Explanation:
Aspirin (C9H8O4)
∴ mm C9H8O4 = 180 g/mol
salicylic acid (C7H6O3)
∴ mm C7H6O3 = 138 g/mol
acetic anhydride (C4H6O3)
∴ mm C4H6O3 = 102 g/mol
acetic acid (C2H4O2)
∴ mm C2H4O2 = 60 g/mol
reaction:
- C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2
∴ g C7H6O3 = 2.0 g
∴ g C4H6O3 = (5.0 mL)(1.08 g/mL) = 5.4 g
limit reagent (L.R):
∴ n C7H6O3 = (2 g)(mol/138 g) = 0.0145 mol C7H6O3 (L.R)
∴ n C4H6O3 = (5.4 g)(mol/102 g) = 0.053 mol C4H6O3 (E.R)
theoretical yield:
Amount of product predicted by balanced equation when all limit reagent reacts
⇒ n C9H8O4 = (0.0145 mol C7H6O3)(mol C9H8O4/mol C7H6O3) = 0.0145 mol C9H8O4
⇒ g C9H8O4 = (0.0145 mol)(180 g/mol) = 2.61 g C9H8O4
