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3 years ago

Which of the following is a property of bases? (1 point)

1 answer:

7 0

Which of the following is a property of bases?

B. Feels slippery

This is most likely the Chemical Properties of Bases

The Chemical Properties of Bases include:

- Bases change the colour of litmus from red to blue.

- They are bitter in taste.

- Bases lose their basicity when mixed with acids.

- Bases react with acids to form salt and water. This process is called Neutralisation Reaction(Read).

- They can conduct electricity.

- Bases feel slippery or soapy.

- Some bases are great conductors of electricity.

- Bases like sodium hydroxide, potassium hydroxide, etc are used as electrolytes.

- Alkalis are bases that produce hydroxyl ions (OH-) when mixed with water.

- Strong alkalis are highly corrosive in nature whereas other alkalis are mildly corrosive.

- The pH value of bases ranges from 8-14.
Alkalis and ammonium salts produce ammonia.

- Hydrogen gas is evolved when metals react with a base.

- Bases are classified on the basis of strength, concentration and acidity.

- The different kinds of acids are strong base acid, weak base acid, concentrated base, dilute base, monoacidic base, diacidic base and triacidic base.

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You are in charge of inflating balloons for a parade. When you inflate the balloons in the morning, It will be 15 degrees Celsiu

tatiyna

Answer:

so you answer would be B

Explanation:

well what you would do is add 15+25=40 and what they are asking is whay are the degrees in the balloon so you would have B as your answer

hoped i helped have a great weekend

8 0

3 years ago

A solution of potassium cyanide, KCN, is made by dissolving 3.2 g of KCN in water. When this solution reacts with excess hydroch

Rama09 [41]

Answer:

22.7%

Explanation:

We must first put down the equation of reaction to guide our work while solving the problem.

KCN(aq) + HCl (aq)--> KCl(aq) + HCN(aq)

The questions specifically state that HCl is in excess so KCN is the limiting reactant.

Number of moles of KCN reacted= mass of KCN reacted / molar mass of KCN

Mass of KCN reacted= 3.2 g

Molar mass of KCN= 65.12 g/mol

Number of moles of KCN= 3.2/65.12 g/mol= 0.049 moles

Theoretical yield of HCN is obtained thus;

From the reaction equation;

1 mol of KCN produced 1 mole of HCN thus 0.049 moles of KCN will produce 0.049 moles of HCN.

Mass of HCN = number of moles ×molar mass

Molar mass of HCN= 27.0253 g/mol

Hence mass of HCN produced= 0.049mol × 27.0253 g/mol= 1.32g of HCN

Actual yield of HCN= 0.30g

% yield= actual yield/ theoretical yield ×100

% yield= 0.30/1.32 ×100

%yield= 22.7%

3 0

4 years ago

Read 2 more answers

Write the formulas for the following compounds: (a) rubidium nitrite, (b) potassium sulfide, (c) sodium hydrogen sulfide, (d) ma

choli [55]

Answer:

All are having different valent cation and anion like mono,di and trivalent polyatomic ions .

A. RbNO3

B. K2S

C. NaHS

D. Mg3(PO4)2 formed by divalent Mg+2 and trivalent PO43-

E. CaHPO4

F. PbCO3 , lead is in Pb+2 form

G. SnF2

H. (NH4)2SO4

I. AgClO4

J. BCl3

6 0

3 years ago

A 35.66g sample of copper is heated using 600j of energy. if the original temperature of the copper is 85C what is its final tem

ira [324]

This problem is providing the mass, energy, initial temperature and specific heat of a sample of copper that is required to calculate the final temperature.

Thus, we recall the general heat equation:

$Q=mC(T_f-T_i)\\$