Magnesium has a density of 1.071g/cm^3. Aluminum has a density of 2.700 g/cm^3. An unknown metal has a mass of 15g and a volume of 14cm^3. Is the unknown metal magnesium or aluminum? Show your work.

True or False Are coefficients used to balance chemical reactions?

A balanced chemical equation indicates both the number of particles of reactants and products and the number of a. orbits. c. nuclei. b. electrons. d. moles

When balancing a chemical equation can you adjust in the subscript in a formula, explain

How do the electrons in bonds (bonding domains) differ from lone pairs (non-bonding domains) ?

A 180 ml volume of gas is measured at 87 degrees Celsius. if the pressure remains unchanged, what will be the volume of the gas at standard temperature

Which terms are used to identify pure substances? (1) an element and a mixture (2) an element and a compound (3) a solution and a mixture (4) a solution and a compound

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32- HCO31- NO21- NO31-

What is hybridisation

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

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.