What is a physical property of a solid used to describe it's surface?

Hydrogen gas + chlorine gas=hydrogen chloride skeleton equation

What mass of hydrogen is produced from the reaction of 50.0 g of Mg and 75.0 g of HCl? How much of the excess reagent is left over? Mg + 2HCl → MgCl2 + H2

When the equation below is correctly balanced, what are the coefficients of Pb and H20, respectively? Pb + H2O + O2 = > Pb (OH) 2 A. 1,2 B. 2,1 C. 2,2 D. 1,1 E. none of these

a mixture of 2 moles of Ne gas and 3 moles of Ar gas are kept in a cylinder at 25.0 degress celcious. what is the indivual pressure of each and the total pressure?

A high school chemistry teacher needs to dilute her stock of 18.0 M H2SO4 solution for a lab. How many mL of water must she add to 10.0 mL of 18.0 M H2SO4 solution to prepare a 0.50 M H2SO4 solution?__mL

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?

According to the periodic table, which element has an atomic number of 40? a. u b. ca c. zr d. np

3. Which word best fits with the Earth's day and night cycle a. Revolution b. Rotation C Orbit d. Axis

What causes temperatures in the summer to be higher than temperatures in the winter? A. The greenhouse effect, which raises temperatures on Earth, takes place during the summer months only. B.