Compounds are always composed of two or more elements
Course:- Chemistry
Reference No.:- EM13149059

Assignment Help >> Chemistry

Which of the following statements are part of John Dalton's atomic theory? I. All atoms of an element are identical in all ways. II. Compounds are random chemical combinations of several elements. III. Compounds are always composed of two or more elements. IV. Atoms of different elements are different. V. Isotopes have the same number of protons but a different number of neutrons.

Put your comment

Ask Question & Get Answers from Experts
Browse some more (Chemistry) Materials
A reaction with the activation energy Ea= 166.00 kJ/mol, has a rate constant k = 3.900 x 102 at 329.00 Kelvin. Determine the rate constant when the temperature is changed to
SO2Cl2 decomposes to SO2 and Cl2 All are gases. .0260 moles of SO2Cl2 are introduced in 1 L bulb at 375K When system reaches equilibrium total pressure in bulb is 1.43 atm.
Explain why must the slit width of a prism monochromator be varied to provide constant effective bandwidths but a nearly constant slit width provides constant bandwidth with
The molecule, atracurium, is a very complex drug. Atracurium exhibits a very short half-life (20-min). The products of the fastest inactivation process are shown. Define wha
An ideal solution is formed from a mixture of the nonvolatile solute urea, CO(NH2)2, and methanol, CH3OH. The vapor pressure of pure methanol at 20°C is 89 mmHg. If 4.9 g of
For 1.000 kg of CH4, Compute the change in entropy when the temperature is raised from 300 K to 1000 K at 101 kPa. Over this temperature range, Cp = 14.15 + 75.5x10-3T - 180
A certain reaction requires 80 minutes to reach completion in refluxing diethyl ether (bp 35 deg C). Estimate the reflux time required if the reaction is run in tetrahydrofu
A balloon is filled to a volume of 55.0 ml at a temperature of 40.0 degrees Celsius. The balloon is then heated up at steady pressure to a temperature of 94.0 degrees Celsi