PLEASE HELP ASAP 1) Which of the following is a property of carbon atoms?

They are chemically inert.
They have six valence electrons.
They bond easily with each other.
They readily give up two electrons.

2) Read the following chemical equations.

Reaction 1: H2S + Cl2 → 2HCl + S
Reaction 2: Fe + S → FeS

Which of the following statements is true for both the chemical equations?

Chlorine is reduced in reaction 1 and iron is reduced in reaction 2.
Chlorine is oxidized in reaction 1 and iron is oxidized in reaction 2.
Chlorine is oxidized in reaction 1 and iron is reduced in reaction 2.
Chlorine is reduced in reaction 1 and iron is oxidized in reaction 2.

Option D is the correct answer.

Explanation: A carbon atom is a group 14 element that has atomic number 6.  In order to attain stability carbon atom needs to be bonded to four electrons of another atom. A carbon atom usually bonds with another atom by sharing of electrons.

a. patterns can explain observations.

when 25.0 ml of 0.700 mol/l naoh was mixed in a calorimeter with 25.0 ml of 0.700 mol/l hcl, both initially at 20.0 °c, the temperature increased to 22.1 °c. the heat capacity of the calorimeter is 279 j/°c.

the equation for the reaction is:

naoh + hcl → nacl + h₂o

moles of hcl = 0.0250 l hcl ×

0.700

mol hcl

1 l hcl = 0.0175 mol hcl

volume of solution = (25.0 + 25.0) ml = 50.0 ml

mass of solution = 50.0 ml soln ×

1.00

ml soln

= 50.0 g soln

δt=t2-t1

= (22.1 – 20.0) °c = 2.1 °c

the heats involved are

heat from neutralization + heat to warm solution + heat to warm calorimeter = 0

q1+q2+q3=0

nδh+mcδt+cδt=0

0.0175 mol ×

δh

+ 50.0 g × 4.184 j·g⁻¹°c⁻¹ × 2.1 °c + 279 j°c⁻¹ × 2.1 °c = 0

0.0175 mol ×

δh

+ 439.32 j + 585.9 j = 0

0.0175 mol ×

δh

= -1025.22 j

δh=1025.22j0.0175 mol= -58 600 j/mol = -58.6 kj/mol