Answer:
48.03grams
Explanation:
Density of a substance is calculated as follows:
Density (g/cm³) = mass (g) / volume (cm³)
Based on the information given in this particular question:
Density of lead (Pb) = 11.3 g/cm³
Volume of lead (Pb) = 4.25 cm³
Density = m/V
11.3 = mass/4.25
Mass = 48.025
= 48.03grams.
The third class lever s<span>have </span>the effort<span> placed amongst </span>load<span> and the fulcrum.</span>
It depends ..........................................
Answer:
C) CH4 (g) + O2 (g)→ CO2 (g) + H2O (g)
Explanation:
Methane burns in the presence of air to give carbondioxide and water.
Also, All Alkanes combust in the presence of Oxygen to give carbondioxide and water.
Answer:
D.)
Explanation:
The general equilibrium expression looks like this:
In this expression,
-----> K = equilibrium constant
-----> uppercase letters = formulas
-----> lowercase letters = balanced equation coefficients
In this case, all of the reactants and products are gases, so they should all be included in the expression. The products are in the numerator and the reactants are in the denominator. This makes the correct expression:
<----- Insert formulas
<----- Insert coefficients