23. How much heat do you need to raise the temperature of 100g of aluminum from 15oC to 45oC? q=mC∆T

Compare and contrast the chemical composition and structure of the cytoplasmic membranes found in Bacteria and Archaea. What is the advantage of the archaeal membranes in relationship to the types of environments archaea may inhabit?

How many atoms are in a sample of copper with a mass of 18.46 grams? 2. How many formula units are in a sample of salt with a mass of 67.69 grams? 3. How many molecules are in a sample of water with a mass of 44.99 grams? 4.

What is the pressure in atmospheres of 6.0 moles of an ideal gas if its volume is 2.0 liters and its temperature is at 80.0°C? Record your answer to the nearest atmosphere.

What are 5 elements of matter

Consider this initial-rate data at a certain temperature for the reaction described by N2O3 ( g. - > NO ( g. + NO2 ( g. N2O3 (M) =.1 (initial rate =.66) =.2 (initial rate = 1.32) =.3 (initial rate = 1.98) find k?

Sodium (na), atomic number 11, has a tendency to lose an electron in the presence of chlorine. after losing the electron, na will have ___ protons in its nucleus

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 m to 0.32 m at 25°c. how long will it take for the reaction to be 90% complete?

For a reaction, a plot of ln K versus inverse temperature is found to be linear and fits the following equation: y = - 1,498x + 7.14. What is the value of ΔH? Give your answer with units of kJ/molK; however, you should not type in the units

when methanol, ch3oh, is dissolve in water, a nonconducting solution reslults. when acetic acid, ch3cooh, diisolves in water, the solution is weakly conductng and acidic in nature.

What mass of methanol is combusted in a reaction that produces 112 L of Co2 at STP? A. 112g B. 81.6g C. 64.1g D. 160g