Which instrument is launched into the atmosphere to collect pressure, temperature, humidity, wind speed, and other data?
a. satellite
b. barometer
c. radiosonde
d. hygrometer

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.