Answer:
A = 8
B = 8
C = Oxygen (O)
D = 26
E = 30
F = Iron (Fe)
Explanation:
protons neutrons atomic number mass number element
A 7 B 15 C
D E 26 56 F
mass number = protons + neutrons
E = 56 - 26 = 30
A = 15 - 7 = 8
protons = atomic number
B = 8
D = 26
From atomic number:
C = Oxygen (O)
F = Iron (Fe)
Answer:
V1 = 20.3L
Explanation:
P2 = 811.4Pa
V2 = 25.6L
P1 = 1023.6Pa
V1 = ?
To solve this question, we'll have to use Boyle's law which states that the volume of a fixed mass of gas is inversely proportional to its pressure provided that temperature remains constant.
Mathematically,
V = k / P, k = PV
P1 × V1 = P2 × V2 = P3 ×V3 =......=Pn × Vn
P1 × V1 = P2 × V2
Solve for V1
V1 = (P2 × V2) / P1
V1 = (811.4 × 25.6) / 1023.6Pa
V1 = 20771.84 / 1023.6
V1 = 20.29 = 20.3L
The initial volume was 20.3L
Answer: Acid rain.
Explanation:
According to some experts, acid precipitation can lead to acid rain. Acid rain is a product of chemical reactions caused by the release of compounds such as sulfur dioxide and nitrogen oxides into the air. These substances can form in the atmosphere itself and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
There are specific theories that nitrogen oxides cause acid rain, in other sulfur oxides, which are produced by the combustion of coal or petroleum products, for example, in thermal power plants, automobile engines, and plants for the production and purification of metals. With water vapor, they produce nitric or sulfuric acid, respectively. This natural disaster is very bad for flora and fauna, it has a particular negative reflection on forests and the aquatic world, especially fish.
Answer:
Explanation:
hello,
the combined gas law equation is given as;
This combined gas law is gotten from the combination of Charles' law, Boyle's law and the Pressure law.
At constant pressure(this means the pressure is unchanged or fixed and this means the pressure is eliminated), we have:
At constant volume(we eliminate the volume since it is fixed or unchanged), we have;
At constant temperature (we also eliminate temperature), we have
.
thus from the options provided in the question the right answer will be
Answer:
<h2>1. Ionic compound-
</h2><h2>2. Polar molecular compound-
</h2>
Explanation:
Mg is a metal that has 12 atomic numbers and thus its electronic configuration is 
. The outer most shell of this element has 2 electrons so it loses 2 electrons and thus form 
ions. Br is a nonmetal and has 35 atomic number so its electronic configuration is 
. Since its outermost shell has 7 electrons so it can accept one electron and thus forms 
. So magnesium ion and bromide ion combine and forms an ionic compound .
P is also a nonmetal and combine with Br with covalent bond and due to electronegativity differences form polar covalent compound such as .
