Answer:
b. 54.9%
Explanation:
An emerald gemstone has the formula Be₃Al₂Si₁₆O₁₈. We can find the mass of each element in 1 mole of Be₃Al₂Si₁₆O₁₈ by multiplying the molar mass of the element by its atomicity.
Be: 3 × 9.01 g = 27.03 g
Al: 2 × 26.98 g = 53.96 g
Si: 16 × 28.09 g = 449.4 g
O: 18 × 16.00 g = 288.0 g
Total mass = 818.4 g
The mass percentage of silicon is:
(449.4 g / 818.4 g) × 100% = 54.91%
Answer:
It is higher in Norfolk because of the warm ocean currents from the south
Explanation:
Can I have brainliest answer please?
The plants without any fertiliser could be the control, to see what the change in the independent variable (fertiliser) does to the growth of the plant (dependant variable).
Hope that helps.
Answer: wait im gonna search some info.
Explanation:I come back with an asnwer for you
Answer:d.break them down to monosaccharides
Explanation:
Polysaccharides are polymers made of monosaccharide monomers. The polysaccharides do not release energy except the monosacharides are broken down to monosaccharides by stepwise hydrolysis. To obtain energy from polysaccharides, the constituent monosacharides are obtained and these are now involved in the biological cycles that liberate energy.
