Answer:
Molar Mass: 138.9818 g/mol
Explanation:
First calculate the number of moles. Molar mass of Calcium
= 40.08 g/mol
Number of moles = 169 g / (40.08 g / mol) = 4.217 moles
Using Avogadros number, we can get the number of atoms:
<span>Number of atoms = 4.217 moles * (6.022 x 10^23 atoms /
moles) = 2.54 x 10^24 atoms</span>
Rate equation for the reaction is as follows
Rate = k [A]³[B]²
concentration of A = 2 M
concentration of B = 3 M
k - rate constant - 0.01
as this is a 5th order reaction, units for rate constant are M⁻⁴s⁻¹
substituting these values in the equation
Rate = k [A]³[B]²
rate = 0.01 M⁻⁴s⁻¹ x (2 M)³ x (3 M)²
rate = 0.01 x 8 x 9 = 0.72
rate of the reaction is 0.72 M/s
Answer:
Box #1: a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
Explanation:
The terms: The scientific method describes the processes by which scientists gain knowledge about the world. It's characterized by six key elements: questions, hypotheses, experiments, observations, analyses, and conclusions. These elements are interrelated steps, so they don't always function in the same order.
The Relation: When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.
