Which corresponds to a pressure of 1.23 atm? 8.73 mmHg 9.23 mmHg 125 mmHg 935 mmHg

You might have a flashlight that runs (2) d-cells of 1.5 volts each in series. the bulb is rated for 0.7 amps. what's its resistance?

Calculate the number of moles of solute present in each of the following solutions. Part A 255mL of 1.70M HNO3 (aq) Part B 45.0mg of an aqueous solution that is 1.35m NaCl.

Using the reagents below, list in order (by letter, no period) those necessary to transform 1-chlorobutane into 1-butyne. Note: Not all entry-fields provided may be needed. Choose "na" in any space where you have no reagent. a. H2, Pt: b.

What is the molar mass of H2O?

The greater the specific heat of a substance: a. more heat energy is required to change the temperature b. less heat energy is required to change the temperature c. it has no effect on the temperature change

What is the cost to drive 405 miles if the cost of gasoline is $3.08 per gal and the car makes 46 miles/gal of gas?

If data are from a trusted source and the results are validated by multiple tests, the evidence supporting a scientific claim is

Consider the following reaction: 2CH3OH - - - > 2CH4+O2 delta H = + 252.8kJ. Calculate the amount of heat transferred when 22.0g of CH3OH (g) is decomposed by this reaction at constant pressure. Include units

What is an example of a heterogeneous mixture? A) gasoline B) diet soda C) grape juice D) flour and water

State the four principles of Dalton's atomic theory