The sum of the numbers of protons and neutrons in a nucleus of an atom answer

Two 20.0-g ice cubes at - 11.0 °C are placed into 205 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature, Tf, of the water after all the ice melts. Heat capacity of H2O (l) = 75.

What is a closed-loop system?

Two boxes are 8 cm apart. Which of the following should Janet do to decrease the gravitational force between the boxes? 1: Place the boxes 4cm apart. 2: Place the boxes 10 cm apart. 3: Increase the mass of both boxes.

Calculate the volume of 11 g of CO2 at NTP?

Which one would be expected to happen? If one of the buffers that contribute to pH stability in human blood is carbonic acid (H2CO3).

How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C? A: 1.5 B: 2 C: 22.4 D: 32

A mixture of gases at a total pressure of 95 kPa contains nitrogen, carbon dioxide and oxygen. The partial pressure of carbon dioxde is 24 kPa and the partial pressure of the nitrogen is 48 kPa.

The colour change of methyl orange with neutral substance

What occurs in a displacement reaction

Bromine is used to test