Is the reaction with potassium iodide solution and Lead (ll) nitrate solution a physical or chemical change

A. physical change

B. chemical change

What statement best describes an independent variable? a. The factor that's not changed by the experimenter and is impacted by the dependent variable b. The factor that's changed by the experimenter and impacts the constant in an experiment c.

When an electron is added to a neutral atom energy is?

What is 18,000 expressed in scientific notation?

How many grams of water can be produced from 10 moles of hydrogen gas?

Is it possible to go from solid to liquid

The empirical formula of glucose is CH2O the molecular formula of glucose is 6 times than the empirical formula. what is the molecular formula of glucose?

A compound with molecular formula C6H15N exhibits a singlet at d 0.9 (1H), a triplet at d 1.10 (3H), a singlet at d1.15 (9H), and a quartet at d 2.6 (2H) in its 1HNMR spectrum. Its IR spectrum shows one medium absorption band near 3400 cm-1.

A system that transmits genetic information from one generation to the next

Consider the following four solutions: a. NaCl in water b. Acetic acid in water c. Acetic acid in benzene d. Naphthalene in benzene Which of these solutions has the strongest solute-solvent interactions and the interaction is of which type?1.

Formula for sulfur tetrafluoride