The answer is true, catalysts increase rates by lowering the activation energy of a reaction. Catalysts lower the reaction energy and so the reaction occurs faster. Enzymes perform the role of biological catalysts. Most metabolic pathways of the body are controlled by enzymes. Enzymes by classification are proteins. <span />
Im dying at the fact that you put in under ‘Chemistry’, good luck though.
Answer:
You can tell types of matter apart based on their properties. Physical properties of matter can be observed or measured without changing the identity of the substance.... Characteristic physical properties are properties that are always the same for a substance - so they can be used to identify a substance.
Explanation:
Answer:
Formation of Gas
Explanation:
The solid Carbon Dioxide warms it sublimates to gas. With limited room for the gas to expand, the pressure in the bottle increases.
Answer:
a. Moles in the vessel = 1.85 moles of the gas
b. 1.11x10²⁴ molecules are in the vessel
Explanation:
a.It is possible to determine moles of a gas using the general law of gases:
PV = nRT
<em>Where P is pressure: 5.00atm; V is volume = 9.00L; R is gas constant: 0.082atmL/molK; T is absolute temperature: 273.15K +24.0 = 297.15K</em>
<em />
Computing the values:
PV / RT = n
5.00atm* 9.00L / 0.082atmL/molK*297.15K = n
<h3>Moles in the vessel = 1.85 moles of the gas</h3><h3 />
b. With Avogadro's number we can convert moles of any compound to molecules thus:
Avogadro's number = 6.022x10²³ molecules / mole
1.85moles ₓ (6.022x10²³ molecules / mole) =
<h3>1.11x10²⁴ molecules are in the vessel</h3>
