Question 17 of 25 An allergy pill has the following information on its label:
• This product will reduce the effects of hay fever.
• This product has not been evaluated by the Food and Drug Administration.
• This product contains all-natural ingredients
Which claim is made by this product?
O A. This product has certain types of ingredients.
OB. This product was designed by scientists.
O C. This product is endorsed by the government.
OD. This product is only available by prescription.
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O

try answer.com that works for me

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.