Lanthanum-138 has a half-life of 105 billion years. After 525 billion years, how much of a 240 g sample of this radioisotope will remain?

nevermind, I got 7.5g and was right

Why will sugar dissolve faster in hot tea than it will in cold tea?

2. A (n) has different properties than the elements that compose it and is made of substances combined in a specific ratio.

The chemical equation of magnesium and nitric acid with balancing process

Why does burning fossil fuels put ecosystems under pressure?

All magnetic minerals will have the element iron in the chemical composition true or false

Which of the following are correct statements? Check all that apply. A. A neutron is a neutral particle in the nucleus. B. A proton is a positively charged particle that orbits the nucleus. C.

What is the empirical formula for propene (C3H6) ?

Which substance, when dissolved in water, forms a solution that conducts an electric current

Room has a dimension of 10ft x 20 ft x 8 ft. What is the volume of the room in cubic yards if 1 yard = 3ft

Which of the following best describes a mixture in which ionic compounds are dissociated in solution? a. ion solution b. aqueous solution c. hydraulic solution d. hydrochloric solution