IF there is a decrease in the temperature at the equator then it is possible that there is an increase in the speed of current.
The chemicals responsible for the red flame have been strontium, the green flame has been produced by barium, and sodium has been responsible for the yellow flame.
Aerial fireworks are produced by chemical change. The fireworks have been composed of gun powder and chemicals which provide color to the reaction. The gun powder has been composed of Potassium nitrate, copper, and sulfur. The combustion reaction takes place with gunpowder and heat energy. The reaction results in the explosion of the fireworks.
The fireworks have been produced in varying colors due to the chemicals present in them. The chemical change for the transition from one substance to another and results in the colorful lights.
The chemicals responsible for the red flame have been strontium, the green flame has been produced by barium, and sodium has been responsible for the yellow flame.
For more information about aerial fireworks, refer to the link:
Strontium or Lithium compounds produce red color, Barium compounds produce green color, and Sodium compounds produce yellow color in aerial fireworks.
The elements responsible for producing red, green, and yellow colors in aerial fireworks are:
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Answer:
C just took the test
Explanation:
Mn + CaO
Li + ZnCO3
Cu + 2KNO3
I agree, the answer is Li+ZnCO3.
c. carbon family
b. halogens
d. metalloids
Answer:
b. Halogens
Explanation:
Chemical reactions are associated with the 'breaking' of old bonds and formation of new bonds. Since valence electrons are the ones that participate bonding, therefore the reactivity of elements must depend on the ease with which these electrons can be lost or gained.
Noble gases have fully filled (n²np⁶) valence electron configuration and are highly stable and inert.
Carbon family have less that half filled p-orbitals (ns²np²) in their valence configuration and are not very reactive. Metalloids have their reactivity in between metals and non-metals.
Halogens in contrast have a valence electron configuration of ns²np⁵. They only need one more electron to complete their octet and become stable. As a result they are highly reactive i.e. they readily attract electrons and form new bonds.
Answer:
6.40x10²⁵ hydrogen atoms
Explanation:
The solution contains:
We need to calculate the total of hydrogen atoms (H) in the solution.
Lets now calculate the number of hydrogen atoms in the solution:
total H atoms = (H atoms in water molecules) + (H atoms in ammonia molecules)
total H atoms = (2 x 1.80x10²⁵) + (4 x 7.00x10²⁴) =
total H atoms = 3.60x10²⁵ + 2.80x10²⁵ = 6.40x10²⁵