The speed of the yacht : 100 km/h
<h3>Further explanation </h3>
Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
- At constant velocity motion:
the speed of vo = v = constant
acceleration = a = 0
Δx = vt or x = xo + vt
An equation of constant velocity motion
x = distance = m
v = speed = m / s
t = time = seconds
A yacht sailed at a steady speed for 0.5 hours, and traveled 50 kilometers
so the velocity/speed:
The electronic geometry for the carbonate ion, in CO₃²⁻ is trigonal planar, and molecular geometry will be trigonal planar.
The electronic geometry = Total number of atoms + lone pair around the central atom
= 3 atoms + 0 lone pair
= sp₂ (trigonal planar)
The molecular geometry = As there is no lone pair its geometry will be trigonal planar.
The answer is D because one of them is sharing their electrons with the other.
P₂O₅ is an empirical formula
<h3>Further explanation</h3>
Given
compounds
Required
an empirical formula
Solution
The empirical formula is the smallest comparison of the atoms forming the compound.
Molecular formulas are formulas that show the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
1. P₂O₅ : the ratio of compounds cannot be further reduced to whole numbers⇒empirical formula
2. P₄O₆ : molecular formula
(P₂O₃)₂=P₄O₆
P₂O₃ : empirical formula
3.C₂H₄ : molecular formula
(CH₂)₂=C₂H₄
CH₂ : empirical formula
4. C₃H₆ : molecular formula
(CH₂)₃=C₃H₆
CH₂ : empirical formula
Identify each of the following as a product or a coefficient in reaction below
<h2> 2H^+ + CO3^2- → H2O + CO2</h2><h2 /><h2 /><h3> <u><em>reactant are</em></u></h3><h2> H^+ and CO3^2-</h2>
<u><em>Reason: </em></u>Reactant of a chemical reaction are found in the left side. They are initially present in a chemical reaction which are consumed to form product.
<h3> <em><u>Product are</u></em></h3>
H2O and CO2
<u><em>Reason</em></u>: They are found in the right side of the reaction. Product are produced in a chemical reaction.
<em><u>coefficient</u></em>
<em><u> </u></em><em><u> </u></em>is 2
- Coefficient is the number found in front of a formula.
- Therefore 2 is the coefficient since it is found in front of H^+