A car traveling at
20 m/s starts to decelerate steadily it comes to a complete stop in 10s. The
equation for the acceleration is velocity divided by time. So divide 20 m/s by
10 s and you will get an acceleration of 2 m/s2.
Answer:
Four Ca²⁺ and eight Cl⁻ ions.
Explanation:
If
0.20 mol·L⁻¹ NaCl = 8Na⁺ + 8Cl⁻
Then
0.10 mol·L⁻¹ NaCl = 4Na⁺ + 4Cl⁻
And
0.10 mol·L⁻¹ CaCl₂ = 4Ca²⁺ + 8Cl⁻
The square will contain 4 Ca²⁺ ions and 8 Cl⁻ ions.
It should resemble the diagram below
Answer:
D. Different functional groups and different physical and chemical properties
Explanation:
A functional group is an atom or group of atoms within a molecule that determines the chemical and physical properties of the compounds it appears in.
The functional group of an alcohol is the -OH group while that of an ether is an oxygen atom bonded to two alkyl or aryl groups, R-O-R'.
Based on the above;
Option A is wrong because they have different functional groups, hence different properties
Option B is wrong because they don't have same functional group even though their properties are different
Option C is wrong because they have different properties even though they have different functional groups
Option D is correct because they have different functional groups and different properties.
Magnesium sulfate is an inorganic salt with the formula MgSO4(H2O)x where 0≤x≤7. It is often encountered as the heptahydrate sulfate mineral epsomite (MgSO4·7H2O), commonly called Epsom salt.
Answer:
1 mole is equal to 1 moles Krypton, or 83.798 grams.
Explanation:
