¿CUÁL ES LA FRASE CORRECTA?
1. las sustancias puras son compuestos químicos.
2. las sustancia...
¿CUÁL ES LA FRASE CORRECTA?
1. las sustancias puras son compuestos químicos.
2. las sustancias simples son sustancias puras.
3. una disolución es una mezcla heterogénea de dos componentes: el disolvente y el soluto.
4. los coloides son mezclas homogéneas de aspecto heterogéneo.
Answers: 3
Chemistry, 22.06.2019 04:00
Gymnast always perform on padded mats. how does the mats protect the gymnast
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Chemistry, 22.06.2019 17:10
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
Chemistry, 23.06.2019 18:30
Esure to answer all parts. the equilibrium constant for the reaction ni2+(aq) + 6 nh3(aq) ⇌ ni(nh3)6 2+(aq) is kf = 5.6 × 108 at 25°c. (a) what is δg o at this temperature? (b) if standard-state concentrations of reactants and products are mixed, in which direction does the reaction proceed? (c) determine δg when [ni(nh3)62+] = 0.010 m, [ni2+] = 0.0010 m, and [nh3] = 0.0050 m. in which direction will the reaction proceed to achieve equilibrium? (a) × 10 j/mol (enter your answer in scientific notation.) (b) to the right. to the left. (c) × 10 j/mol (enter your answer in scientific notation.) to the right. to the left.
Answers: 3
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