Answer:
Ants are as good as sniffer dogs at detecting disease
“Ants are thus equivalent to dogs – the most studied bio-detectors in terms of detection abilities,” the researchers write.
Answer:
The pressure of the gas inside the plastic bag is 1.971 atm
Explanation:
Since temperature did not change, it means it is constant. This will then be Boyle's law. Thus
P1V1 =P2V2
Where P1 is the initial pressure = 10.2 ATM, P2 is the final pressure which is to be calculated.
V1 is the initial volume = 800.0 mL and V2 is the final volume of the gas = 4.14 L
From the formula,
P2 = P1V1/V2
= 10.2×800÷4.14
= 1.971 atm
Answer:
Explanation:
To know the temperature at which KCl dissolves in water we need to refer to the general solubility curves.
In the case of , of it will dissolve in of water at a minimum temperature of .
So, the the minimum temperature needed to dissolve 35 grams of KCl in 100 grams of water is .
I. The solubility of NaCl at 25 degrees C would be between the solubilities at 20 and 30 degrees C. A reasonable answer would be 36 grams/100 g water
ii. From the table, it’s clear that the salts are more soluble at higher temperatures, indicating that an increase in temperature increases solubility.
iii. At 50 degrees C, a saturated ammonium chloride solution will have 50.6 grams of salt per 100 g water. At 20 degrees C, the solution can hold only 37.3 grams of salt per 100 g water. Thus, 13.3 grams of salt will precipitate per 100 grams of water.
Answer:
15/15
Explanation:
set the numbers equal to each other side by side and subtract the first numerator(the top number) by the second one