import math
def ph_to_ppm(ph):
"""Converts a pH value to ppm.
Args:
ph: The pH value to convert.
Returns:
The pH value in ppm.
"""
kw = 10 ** -ph
t = 25 + 273.15
ion_product = kw * math.pow(10, -(t / 12.0))
return 10 ** (-ion_product / 2)
if __name__ == "main":
print(ph_to_ppm(7.4))
Rhodesia Elizabeth the second 25c 1964
add 273 to get from C to K 25 + 273 = 298 Kelvins
25c = 298.15k
1, a 25c coin.
The recommended size of bike tube for a tire with dimensions 700x23/25c is 700x23/25c.
4 cents
77f
Nine American coins to sum up to 93 cents: 25c 25c 25c 10c 10c 5c 1c 1c 1c
The 1969 25c coin is worth more due to its low mintage, rarity, and collector demand. The limited number of coins produced in that year has made it highly sought after by numismatists, contributing to its higher value in the coin collecting market.
Potassium is the metal that reacts most vigorously with water at 25C.
For a tire size of 700 x 23-25c, you should use a bike tube that is 700c x 23-25c.
the answer is 5c