I need the answer to question 6 B Heat energy flows from A to B as the average kinetic energy of the particles in A increasesC Heat energy flows from B to A as the average kinetic energy of the particles in B decreasesD Heat energy flows from B to A as the average kinetic energy of the particles in B increasesWhen NH4CI is added to water, the resulting solution feels cool to the touch. Which best describesthis observation?A The matter, or solution, has a positive AT while the process of dissolving has a negative AH.B The matter, or solution, has a negative AT while the process of dissolving has a negative AH.C The matter, or solution, has a positive AT while the process of dissolving has a positive AH.D The matter, or solution, has a negative AT while the process of dissolving has a positive AH.7.A sample of aluminum metal absorbs 9.86 J of heat, and the temperature of the sample increasesfrom 23.2°C to 30.5°C. Given that the specific heat capacity of aluminum is 0.90 the mass of thesample is:A 72 gB 65 gC 8.1 g6.

At a particular temeprature the amount of heat energy released (or) obserbed when 1 mole of solute…

Answered: When NH4CI is added to water, the…

Science

Chemistry

When NH4CI is added to water, the resulting solution feels cool to the touch. Which best describes this obsenvation?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Туре: 17) CAH8+O2→ - Туре: 18) KCI + Mg(OH)2 → Туре: 19) Zn +_ Au(NO2)2→ Туре: 20) KOH +_ H2SO4 → - Туре: 21) Bas + PtCl2> - Туре: DELL
please help!
Macmillan Learning Complete the Ksp expression for Ag₂CO3. Ksp = 8.46 × 10-12 = MacBook Pro Search or type URL
How does carminic acid a (organic compound) allow them to function as a pigments in 2-3 sentences.
13. Some fungi live as single-celled organisms. Group of answer choices True False 14. For a fungus, a fruiting body such as a mushroom serves which function? Group of answer choices Allowing asexual reproduction by fragmentation Spreading spores produced during sexual reproduction Causing disease by consuming tissues in an animal host Storing nutrients as a permanent organ in the fungus Question 15 What sort of diseases can be treated with antibiotics? Group of answer choices Cancers Diseases caused by viruses Diseases caused by fungi Diseases caused by bacteria Question 16 Which of the following is an example of a bacterium causing harm to another organism? Group of answer choices Tuberculosis in humans caused by Mycobacterium tuberculosis Protozoa in the genus Plasmodium causing malaria in humans Fungi in the genus Penicillium producing penicillin that kills nearby bacteria The ghost plant Monotropa uniflora stealing nutrients from fungi NOV 14 MacBe esc 80 O00 000 F1 F2
please answer 4 and 5 multiple choice
A solution of DNA of unknown concentration (termed "[unknown] DNA solution") gave an absorbance value of 0.39 at 260 nm. The goal here is to determine the DNA concentration of this [unknown] DNA solution. To calculate this, you are given the following additional information: A DNA solution whose concentration is 50 ug/ml has an absorbance value of 1.0 at 260 nm. Using this information and knowing that A1/C1 = A2/C2 i. Calculate the DNA concentration (ug/mL) in the DNA solution of [unknown] ii. iii. iv. Once you have determined the DNA concentration of [unknown] DNA solution, calculate how many ug of DNA would be present in 25 μl of this DNA solution If you dilute the "[unknown] DNA solution" 10-fold, i.e. 1/10, what will the absorbance value (at 260 nm) of the diluted solution be? What will the new concentration of DNA of the diluted solution be?
Et3 N DME/ Me Sich 50 LDA/DMELC H₂0
Answer question d