HURRY UP Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?

Group of answer choices

50 g

100 g

12.5 g

25 g

Why is it not advisable to use small value of incident angle to carry out experiment

Which one of these statements is not true? A) Momentum is conserved during elastic collisions. B) Momentum is conserved during inelastic collisions. C) Momentum changes only when there is a force applied. D) They are all true statements.

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? The cloud is extremely hot. The cloud is visible primarily because it reflects light from nearby stars.

What is the apparent magnitude of the brightest star in the Big Dipper?

When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume calorimeter, the temperature of the calorimeter increases by 10.0°C. The heat capacity of the calorimeter is 6.97 kJ/°C.

7. If your accelerator suddenly gets stuck what should you do?

When h2o is removed from the mixture does the equilibrium shift to the right to the left or is there no shift?

Which best explains why the acoustics underwater affect the Doppler effect? Sound waves can not transfer energy through water. Sound waves can not travel through water. The speed of sound is less in water than in air.

What is the part of the cell that stores food?

2. A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit? (1) 0.200 12 (3) 4.62 1 (2) 1.95.22 (4) 45.012