During the pyramid-building era the ancient Egyptians used two units of length, the palm
and the ell. An ell was 7 palms and a palm
was about 3 inches.
If a hawk is tracked at a diving speed of 3
ells per second, what is its speed in inches per
second?
1. 126 in/s
2. None of these
3. 63 in/s
4. 0.7 in/s
5. 98.6in/s
6. 21 in/s
7. 5.25 in/s
8. 1/3 in/s
9. 7in/s
10. 42 in/s

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.

Product should she record in last row of the table

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b