Mathematics, 18.03.2021 18:30, jaylene12345678910
The equation for the pH of a substance is pH = -log|H*], where H+ is the concentration of hydrogen ions. A basic
solution has a pH of 11.2. An acidic solution has a pH of 2.4. What is the approximate difference in the concentration
of hydrogen ions between the two solutions?
Answers: 3
Mathematics, 21.06.2019 17:00, lefarrioe8621
The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?
Answers: 2
Mathematics, 21.06.2019 17:30, 21villalobosjabez
Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.
Answers: 2
Mathematics, 21.06.2019 18:30, yeet6942000
Complex numbers multiply โ-4 * โ-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).
Answers: 1
Mathematics, 22.06.2019 00:30, goverton101
Consider this expression and the steps to evaluate it. 4^5(โ2)^9/4^8(โ2)^3 1. apply the quotient of powers: โโโโ (โ2)^a/4^b 2. evaluate powers: โโโโโโโโโ c/d select the value of each variable. a = _ b = _ c = _ d = _
Answers: 3
The equation for the pH of a substance is pH = -log|H*], where H+ is the concentration of hydrogen i...
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