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The Mark 84 has a nominal weight of 2,000 lb (907 kg), but its actual weight varies depending on its fin, fuze options, and retardation configuration, from 1,972 to 2,083 lb (894 to 945 kg). It is a streamlined steel casing filled with 945 lb (429 kg) of tritonal high explosive.
The flammable range of ammonia in dry air is 15.15–27.35% and in 100% relative humidity air is 15.95–26.55%. [ 42 ] [ clarification needed ] For studying the kinetics of ammonia combustion, knowledge of a detailed reliable reaction mechanism is required, but this has been challenging to obtain.
For example, the FAO (2002) figure for Denmark, which has one of the highest meat export rates compared to its population, was 145.9 kg (322 lb) (highest in the world). More recent FAO figures (2009) have taken the earlier discrepancy into account, resulting in a significantly lower 95.2 kg (210 lb) for Denmark (13th in the world).
The alkaline earth metal strontium (38 Sr) has four stable, naturally occurring isotopes: 84 Sr (0.56%), 86 Sr (9.86%), 87 Sr (7.0%) and 88 Sr (82.58%). Its standard atomic weight is 87.62(1).
The Nobel announcement illustrated this by saying that a 1 square meter graphene hammock would support a 4 kg cat but would weigh only as much as one of the cat's whiskers, at 0.77 mg (about 0.001% of the weight of 1 m 2 of paper). [141] Large-angle bending of graphene monolayers with minimal strain demonstrates its mechanical robustness.