An ionic bond is when the atoms transfer electrons, rather than share electrons. This gives the ionically bonded elements a charge.
Unlike ionic bonds, covalent bonds involve the sharing of electrons between atoms.<span>
Answer: C. </span> sharing of electrons between atoms.<span> </span>
Answer: The specific heat capacity of the unknown metal given is
.
Explanation:
Given: Mass = 225 g
Change in temperature = 
Heat energy = 1363 J
The formula used to calculate specific heat is as follows.

where,
q = heat energy
m = mass of substance
C = specific heat
= change in temperature
Substitute the values into above formula as follows.

Thus, we can conclude that the specific heat capacity of the unknown metal given is
.
Answer:
309.1K
Explanation:
Step 1: Convert the flown heat to Joule
We will use the relationship 1 kJ = 1,000 J.

Step 2: Convert the mass of water to gram
We will use the relationship 1 kg = 1,000 g.

Step 3: Convert the initial temperature to Kelvin
We will use the following expression.
K = °C + 273.15 = 33.9°C + 273.15 = 307.1 K
Step 4: Calculate the final temperature
We will use the following expression.

where,
- c: specific heat capacity

Answer: A) 67.1 moles
Explanation:
The balanced reaction is :


To calculate the moles, we use the equation:

According to stoichiometry;
2 moles of iron is produced by 3 moles of carbon monoxide
89.3 moles of iron is produced by=
moles of carbon monoxide
2 moles of carbon monoxide is produced by = 1 mole of oxygen
Thus 134 moles of carbon monoxide is produced by =
moles of oxygen