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Recent questions tagged telegram-46926

(chatquestion)...1.2 Question 2 (a) Perform the following conversions: (i) 0.076 L to mL (i) 6.88 x 10? to s (ii) 5000 days to seconds (iv)gal/min to L/s (v) 0.510 in/ms to km/hr. (1gal = 3.37854 L) and (lin = 2.54 cm) (b) The speed of light in the vacuum is 2.998x 108ms-1. Calculate its speed in km/hr. (c) The density of air at ordinary atmospheric pressure and temperature 25°C is 1.19g/L. What is the mass of äir in kilogram in ä that measures 3.0 m x 5.0m (d) Explain the difference between (i) Precision and accuracy (e) Use appropriate prefixes to write the following measurements without exponents: (i) 6.3S x 10- L (ii) 7.2 x 10-6s (iii) 9.5 x 10-11m (iv) 12.4 x 10-8g (v) 10.1 x 10-1K (vi) 5.2 x 10-9 m3 (f) Carry out the following mathematical operations, and give each result with the correct number of significant figurés. (i) 1.05 3 x10-3+ 6.135 (i) 21 - 13.8 (g) As part of a laboratory assignment to determine the value of the gas constant (R), a student measured the pressure (P), volume (V), and temperature (T) for a sample of gas, where PV The following values were obtained: P = 2.560, T = 275.15, and V = 8.8. Calculate R to the correct. number of significant figures.

asked Jan 22, 2020 by balaji.thirumalai

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