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Our nearest star (other than the Sun) is 4.2 light-years away. That is, it takes 4.2 years for the light it emits to reach Earth. How far away is it in metres? Give your answer to 3 sf.
A 1000 kg automobile is pulled by a horizontal tow line with a net force of 950 N. What is the acceleration of the auto? (Neglect friction.) A constant net force of 1500 N gives a toy rocket an acceleration of 2.5 m/s2. What is the mass of the roc..
The partial pressures of gas A and gas B, respectively, are 0.263 atm and 0.676 atm. If 0.160 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
When (S)-2-bromobutane undergoes an S2N reaction with CH3O-, the product is the compound shown below. What is/are the configuration of the product(s) obtained from this reaction
you are given a small bar of an unknown metal x. you find the density of the metal to be 10.5 gcm3. an x-ray
which compunds moves to the aqueous NaOH? Provide the chemical reaction that occured when NaOH was added. Clearly indicate the different between ionic bond and covalent bond.
what will the maximum temperature reached by the resulting solution? [Assume that there is no heat loss to the container, that the specific heat of the final solution is 4.18 J/g*C, and the density of the final solution is that of water.]
What is the activity of a 1.00 mg sample of P-32? c) Approximately what mass of 32P will remain in the original 1.00 mg sample after 57 days. d) What is the rate of radioactive decay after 57 days
sample of HCl solution reacts with excess Mg to produce 4.20 L of H2 gas at 745 mmHg pressure and 35.0 degrees C. What is the molartiy of the HCl solution?
Differ from the ideal pressure? The value For N 2 gas is given as , a = 1.390 L2atm/mol2 and b = 3.910E-2 L/mol.
Explain why the number of moles must remain constant for any of the gas laws to apply
Write and balance net ionic equation for oxalic acid reacting with permanganate ion in acidic solution.
What are thermoplastics. What are thermosetting plastics. What are the uses of thermoplastics. What are the uses of thermosetting plastics. Give examples of thermoplastics. Give examples of thermosetting plastics. What the various conditions for comb..
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