A nitrogen atom has five valence electrons. The Lewis structure shows how a nitrogen atom bonds with three hydrogen atoms to form an ammonia molecule, NH3. How many valence electrons does the nitrogen atom have in this ammonia molecule?

Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a velocity of 20.0 m/s.

Determine the molar solubility for al (oh) 3 in pure water. ksp for al (oh) 3 = 1.3 x 10-33.

Which base is the strongest for the given [H+]?

What is atomicity of a molecule

What is the atomic number of the atom?

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.

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