Use the mole concept to calculate the number of atoms that are in a 1.75-mol sample of CHCl3.

What substance dissolves more steadily in gasoline

Wind energy is gaining support as a possible energy source for people. What is the source of the energy that generates wind? A) The energy comes from the oceans. B) The energy comes from seismic activity and volcanoes.

the gravity Neptune is about 1.1 times the gravity of earth. how will the mass of an object on Neptune compare with its mass on earth

When in the presence of water, how does a phospholipid orient itself? What property of water initiates this reaction?

Which number gives the atomic mass of the element?

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?

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