The average kinetic energy of water molecules is greatest in which of these samples? (1) 10 g of water at 35°C (2) 10 g of water at 55°C (3) 100 g of water at 25°C (4) 100 g of water at 45°C

A squirrel running up a tree and sitting on a branch shows what kind of energy conversion? A. Chemical potential energy converting to kinetic energy B. Gravitational potential energy converting to heat energy C.

Newlands law of octaves was rejected mainly because of which of the following? A. Elements were arranged in increasing order of atomic mass. B. The cycle of repetition shown by elements is similar to octave in music. C.

How can filtering produce clean water from dirty water?

A silver ring has a mass of 138.45 g. how many calories of heat are required to increase the temperature from 11.8 c to 162.5 c?

How many grams of F - must be added to a cylindrical water reservoir having a diameter of 2.02 * 102 m and a depth of 87.32 m?

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?