Answer:
9.7 ml
Explanation:
Molarity = 2.5 M
Mass = 0.97g
Volume = ?
The relationship between these quantities is;
Molarity = Number of moles / Volume
Number of moles = Mass / Molar mass
Molar mass of NaOH = 40g/mol
Number of moles = 0.97 / 40 = 0.02425 mol
Volume = Number of moles / Molarity = 0.02425 / 2.5 = 0.0097 L
1000 ml = 1L
x = 0.0097 L
x = 0.0097 * 1000 = 9.7 ml
C?
Electrons are found orbiting around the nucleus of an atom in defined energy levels.
The type of chemical bond depends on the substances taking part in it. If the substances are metal and non-metal, then the bond between them is ionic. If two substances are metal, then the bond between them is metallic. If two substances are non-metal, then the bond is covalent.
So basically put this:
Metal + Nonmetal = Ionic
Metal + Metal = Metallic
Nonmetal + Nonmetal = Covalent
Answer:
C3H6O
Explanation:
The percentage composition of the elements in the compound are given as follows:
62.1 % carbon = 62.1g of C
10.5 % hydrogen = 10.5g of H
27.6 % oxygen = 27.6g of O
Next, we convert each mass to mole by dividing by their molar/atomic mass
C = 62.1/12 = 5.175mol
H = 10.5/1 = 10.5mol
O = 27.6/16 = 1.725mol
Next, we divide each mole value by the smallest mole value (1.725)
C = 5.175mol ÷ 1.725 = 3
H = 10.5mol ÷ 1.725 = 6.086
O = 1.725mol ÷ 1.725 = 1
The empirical ratio approximately of C:H:O is 3:6:1, hence, the empirical formula is C3H6O
C. two billiard balls colliding and bouncing off each other
Explanation:
From the given options, the most similar scenario to the type of collision depicted in the kinetic molecular theory is the collision of the two billiard balls bouncing off each other.
Here are some of the postulates of the kinetic molecular theory:
- A gas is composed of a large number of identical molecules moving at different speeds.
- The space occupied by the gas molecules is negligible compared to the volume of the container.
- Molecules move independently of one another
- Molecules collides with one another and with the walls of the container elastically i.e without loss of kinetic energy.
- The temperature of the gas is a measure of its average kinetic energy.
Learn more;
Kinetic molecular theory brainly.com/question/12362857
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