Answer:
The answer to your question is given below
Explanation:
1. When two hydrogen atoms pair together, they form a single bond to achieve complete duet.
Hydrogen atom has 1 shell and 1 valence electron and they contribute it to form bond, thereby obtaining a stable duet configuration
H + H —> H–H —> H2
2. When two halogen atom pair together, they form a single bond to achieve a complete octet which is stable. For example, Cl has 7 electrons in its outermost shell and need 1 more electron to complete it octet. Each Cl will contribute 1 electron each to form a single bond..
Cl + Cl —> Cl–Cl —>Cl2
3. When two oxygen atoms pair together, they form double bond to achieve a complete octet which is a stable configuration.
Oxygen has 6 electrons in its outermost shell and needs 2 more electrons to complete its octet configuration. Each oxygen atom will contribute 2 electrons each to form a double in order to complete it octet configuration.
O + O —> O=O —>O2
4. When two nitrogen atom pair together, they form a triple bond to achieve a complete octet which is stable. Nitrogen has 5 electrons in its outermost shell and needs 3 more electrons to complete it octet configuration. Each nitrogen atom will contribute 3 electrons each to form a triple bond in order to complete its octet configuration.
N + N —> N≡N —> N2.
Answer:
A and C represent elements while B and D represent Compounds
Explanation:
chemical elements cannot be broken down into simpler substances by any chemical reaction. While A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds
Answer:
Accuracy is the degree of closeness to true value.
Precision is the degree to which an instrument or process will repeat the same value.
Hope it helps....
Answer:
38503.5N
Explanation:
Data obtained from the question include:
P (pressure) = 5.00 atm
Now, we need to convert 5atm to a number in N/m2 in order to obtain the desired result of force in Newton (N). This is illustrated below:
1 atm = 101325N/m2
5 atm = 5 x 101325 = 506625N/m^2
A (area of piston) = 0.0760 m^2
Pressure is force per unit area. Mathematically it is written as
P = F/A
F = P x A
F = 506625 x 0.0760
F = 38503.5N
Therefore, the force exerted on the piston is 38503.5N