A sample of gold (au) has a mass of 26.15 g. given that the theoretical density is 19.30 g/ml, what is the volume of the gold sample?

What is the percent of nitrogen (N) by mass is a 55.0g sample of Fe (NO3) 3? The molar mass of Fe (NO3) 3 is 241.86g/mol.

You have been given three test tubes one is acid other two is basic and distilled water how will you find the respective only with red litmus paper

Assume that 50.0 cal of heat is applied to a 15 g sample of sulfur at 20°C. What is the final temperature of the sample if the specific heat of sulfur is 0.175 cal / (g • °C) ?

What are the three components of the cell theory?

The landscape feature that forms when plate movement forces the crust to bend downward is a ...

What is the concentration of hydronium in each of the following cases: [OH-] = 10-12 M? [OH-] = 10-2 M?

Which statement best explains why elements are matter? An element is a physical substance that has mass and takes up space. Elements are pure substances that cannot be divided chemically. Each element is a pure substance composed of one type of atom.

Which of the following best describes what causes the phases of the moon? The alignment of the sun, Earth, and moon The speed of the moon around the Earth The speed of the Earth around the sun The alignment of the planets

At which temperature would atoms of a He (g) sample have the greatest average kinetic energy? (1) 25°C (3) 273 K (2) 37°C (4) 298 K

In the reaction, HCl + H2O produces H3O + Cl, what is the conjugate acid