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- Question #e395e - Socratic
When decaying by alpha emission a nucleus drops by 4 in mass number and 2 in atomic number and emits a helium nucleus (alpha particle) which has mass number 4 and atomic number 2 194 81 T l → 190 79 Au + 4 2α Notice that the total mass number, and total charge (here only indicated by the atomic numbers ) remains unchanged, just moved around If the question meant another isotope, just
- Question #7f190 - Socratic
As 52 + 122 = 132, the Pythagorean theorem is satisfied and we have a right angled triangle APB This means that both AP and PB are perpendicular to AB Eq1 = 0 008k 0 052 = 3 2k Eq2 = 0 005k 0 122 = 0 347222k We apply the Pythagorean theorem to find the magnitude of E : |E| = √0 3472222k2 + 3 22k2 = 3 2188k k = 9 0 ⋅ 109N m2 C2 The directionof E is almost along AP, though there is an
- What is the mass of 211mL of a liquid that has a density of . . . - Socratic
Approx 190*g By definition, rho, is given by the quotient rho_"density"="mass" "volume", and thus has units of g*mL^-1-=g*cm^-3 And so we simply rearrange
- Question #a225d - Socratic
WARNING! Very long answer! > The Ester Value is the number of milligrams of potassium hydroxide required to react with the esters in 1 g of a fat or oil Triglycerides (fats and oils) are important raw materials in the preparation of soaps Three measures of quality are the Acid Value, the Saponification Value, and the Ester Value "Ester Value = Saponification Value - Acid Value" Acid Value
- Question #620d2 - Socratic
"190 mL" Start by writing the balanced chemical equation that describes this double replacement reaction color (blue) (3)"AgNO"_ (3 (aq)) + "K"_ 3"PO"_ (4 (aq)) -> "Ag"_ 3"PO"_ (4 (s)) darr + 3"KNO"_ (3 (aq)) Notice that the reaction consumes color (blue) (3) moles of silver nitrate for every 1 mole of potassium phosphate that takes part in the reaction This tells you that in order for all
- You have 150 grams of water at 25C and 40 grams of water at . . . - Socratic
You have 150 grams of water at 25C and 40 grams of water at 50C You mix them together in a calorimeter to find the final temperature of the mixture Using your incredible math skills, calculate what the final temperature of the mix should be ?
- Site Map - Linear, Exponential, and Quadratic Models Questions and . . .
If one travels 1 miles faster than the other, what is the rate of each? How many telephones could be handled by a switchboard that had the capacity of 190 connections? If P dollars is invested at r percent compounded annually, at the end of 2 yers it will grow to A = P (1+r)^2 At what interest rate will $1,000 grow to $1,210 in 2 years?
- Question #da1ce - Socratic
190 ⋅ T f − 3800 = − 1470 ⋅ T f + 117600 1660 ⋅ T f = 121400 ⇒ T f = 121400 1660 = 73 13∘C Now, you should round this off to one sig fig, the number of sig figs you have for the mass of milk, but I'll leave it rounded off to two sig figs T f = 73∘C
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