Question 1 of 10

Chemistry

1 answer:

max2010maxim [7]3 years ago

4 0

Answer:

D. The stronger the forces, the more heat that must be added to boil

the liquid

Explanation:

The intermolecular forces hold the molecules together and so require energy to break them. When a substance changes states, it's not the atoms that separate from other atoms, it's molecules separating from molecules. The stronger the intermolecular forces, the more energy is required to break the intermolecular forces

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Which of the following statements are true of acids and bases?

gtnhenbr [62]

A. Acids increase the number of OH- ions in a solution. FALSE
B. Bases increase the number of OH- ions in a solution. TRUE
C. Acids increase the number of H+ ions in a solution. TRUE
D. Bases increase the number of H+ ions in a solution. FALSE

8 0

3 years ago

Determine the volume in liters occupied by 22.6 g of I2 gas at STP.

AleksandrR [38]

The volume in liters occupied by 22.6 g of I₂ gas at STP is 1.99 L (answer A)

calculation

Step: find the moles of I₂

moles= mass÷ molar mass

from periodic table the molar mass of I₂ is 253.8 g/mol

moles = 22.6 g÷253.8 g/mol =0.089 moles

Step 2:find the volume of I₂ at STP

At STP 1 moles =22.4 L

0.089 moles= ? L

by cross multiplication

={ (0.089 moles x 22.4 L) /1 mole} = 1.99 L

6 0

3 years ago

Which is the noble gas notation for chlorine?

Mandarinka [93]

Answer: The electronic configuration of Chlorine will be $[Ne]3s^23p^5$

Explanation: Chlorine is an element which belongs to the P-block of the periodic table. Its atomic number is 17.

Atomic Number = Number of electrons

Number of electrons = 17

The nearest noble gas which lies to Chlorine is Neon which has 10 electrons. Rest of the 7 electrons are filled in the 3s and 3p orbitals. Hence, the electronic configuration of Chlorine is

$[Cl]=[Ne]3s^23p^5$