<h3>
Answer:</h3>
231.31 g
<h3>
Explanation:</h3>
<u>We are given;</u>
- The mass of CuO produced as 3.64 moles
- The equation fro the reaction as
2Cu+O2 → 2CuO
We are required to determine the mass of copper that would react.
- In this case, we are going to use the concept on mole ratio.
- From the balanced equation,
2 moles of Cu reacts with 1 mole of oxygen to yield 2 moles of CuO
- Therefore, the mole ratio of copper (Cu) to CuO is 2: 2 or 1 : 1 (simplified)
- Therefore;
Moles of Cu = moles of CuO
Thus, moles of Cu = 3.64 moles
But, Mass = Number of moles × atomic mass
Atomic mass of copper = 63.546
Thus,
Mass of Cu = 3.64 moles × 63.546 g/mol
= 231.31 g
Thus, 231.31 g of copper will react to produce 3.64 moles of CuO
Answer:
A transition element atomic number 29 copper Cu
Explanation:
Answer:
evaporation
Explanation:
Evaporation occurs when a liquid changes to a gas. During evaporation, molecules gain enough thermal energy to escape from the liquid surface into the air as water vapor.
hope this helps
Answer:
When a light is shone on the extract, pigment molecules absorb energy. Because the pigments have been isolated from the thylakoid membranes of the chloroplasts, the energy cannot be used for photosynthesis. Instead, the energy is released as heat and light in a process called fluorescence.
Milk (lowest acidity) < Coffee < Orange juice < Soda pops < vomit < Battery acid (highest acidity)
explanation :
pH values of all :
battery acid pH = 1.0
vomit pH = 2.0
soda pop pH = 2.5
orange juice pH = 3.5
coffee pH = 5.0
milik pH = 6.5
pH value is lesser acidity is more . high pH indicate lesser acidic nature