In general, a screw can hold 80-100 pounds. Several factors can impact on the amount of weight the screw can hold.
In general, a 2×4 can hold a horizontal load of around 20 to 40 pounds per linear foot if the weight is evenly distributed. If the weight is centered between the span, that number could drop to 20 pounds total or less for longer 2x4s. Other factors can increase the weight that a 2×4 can support as well.
The 2 x 4 studs can hold up to 1000 lbs.
For example, an eye bolt with a 1/4 inch shank can typically hold up to 600 pounds at a straight pull (no angle). However, at a 15 degree angle, the maximum weight capacity drops to 480 pounds (80% of the “straight pull” weight capacity).
China is approximately 9,596,960 sq km, while Canada is approximately 9,984,670 sq km, making Canada 4% larger than China. Meanwhile, the population of China is ~1.4 billion people (1.4 billion fewer people live in Canada).
As the valence shell of chlorine consists of seven electrons, so it generally exists as a chloride ion by gaining an electron pair while combining with other elements. Due to the presence of a negative charge, it has a tendency to donate electrons and thus act as a Lewis base.