Answer:
Theoretical 32.04 g
The precent yeild 87. 39 %
Explanation:
Mole of H2 = m/mw = 4/2 = 2 mol
From the equation
1 mol H2 --> 1/2 mol CH3OH
2 mol H2 -->??
So we have 1 mol Ch3oh
Mass of Ch3oh = mole *Mw = 1* 32.04
= 32.04g >>> the theoretically
For percent yeild = actual / theoretical * 100%
( 28.0/32.04) *100% =
87.93%
Answer and Explanation: Sample A is a <u>mixture</u>. Solubility is characteristics of each substance, which means a substance can be distinguished from other substances and can be useful to separate mixtures.
In Sample A, when is added different volumes of water, the resulting powder has different mass. This means there are more than one substance forming the yellow cube. Therefore, sample A is a mixture.
Sample B is a <u>pure</u> <u>substance</u>. Each substance has its own melting point. Whe na pure substance reaches its melting point, temperature is constant until all of that substance is melted. In sample B, temperature is stable at 66.2°C and then, after all the powder is melted, it rises again. Therefore, sample B is a pure substance.
The compound Fe2O3 contains C) 5 total atoms.
This is because there are 2 atoms of Fe (iron) and 3 atoms of O (oxygen) bonded together in this compound, as denoted by the subscripts, and 2+3 = 5.
Hope this helps!
Answer:
kinetic energy
Explanation:
When the object is released, the gravitational potential energy is gradually converted into kinetic energy as it picks up speed.
