Calculate the Kelvin temperatures of the water and record your answers in the data table.

The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleane

svet-max [94.6K]

Answer:

Explanation:

The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleaned from the third postulate in Dalton's series. Magnesium oxide decomposes into magnesium and oxygen. If 4.03 g of magnesium oxide decomposes to form 2.43 g of magnesium, what mass of oxygen gas is also released in the reaction

The word say magnesium oxide decomposes to magnesium and oxygen

the chemical symbols say

MgO-----------> Mg + O2 (since natural oxygen is diatomic)

the balanced equation says

2MgO-------------->2Mg + O2

4.03 gm----------> 2.43 + ?0 gms

tour high school Algebra I class says

? = 4.03 -2.43 =1.60

your chemical analytcal lab says %mO in MgO = 16/40.3 = 39.7%

your calculator says

39.7/100 X 4.03 = 1.60

all of these prove the law of conservation of mass

3 0

2 years ago

Identify which trends in the diagrams below describe atomic radius, ionization energy, electron affinity, and electronegativity.

mihalych1998 [28]

a) figure describe ionization energy , electron affinity & electron negativity

b) figure describe Atomic Radius

c) does represent anything

Electronegativity : An atom attracted the bond pair of electrons in a covalent bond is called electronegativity of an element. H-->Cl

Ionization energy : The amount of energy is required to remove of an electron from an isolated gas atom is called Ionization energy. M + IP-----> M+ + e-

Electron affinity: The amount of enery is released when an electron added to an isolated atom is called electron affinity.

X + e- ------> X- =- EA

Atomic radius ; The distance between the center of neuclies and outer most shell is called atomic radius.

8 0

3 years ago

the process of separating a liquid/solid mixture by slowly pouring the liquid component into a new vessel as the solid settles t

olga55 [171]

The process involving separation of liquid/solid mixture as regards this question is Decantation.

Decantation can be regarded as one of the process used in separation of liquid from solid as well as other immiscible (non-mixing) liquids through the removal of the liquid layer that is present at the top from the layer of solid/liquid which present at the below.

In the process, the liquid will be poured slowly into another vessel as the pouring continues, then the solid will settle in the original vessel.