Explique las diferencias entre mezcla y combinación. De un ejemplo de cada uno.

Acid rain can be destructive to both the natural environment and human-made structures. The equation below shows a reaction that occurs that may lead to the formation of acid rain. 3NO2 + H2O → 2HNO3 + NO How many moles (precise to the nearest 0.

Which of the following is a physical change. A piece of magnesium metal formed bubbles when dropped in acid H2O became a vapor when heated A green chili rotted when left outside Sodium metal burned with water

A sample of the radioisotope potassium-40 is crushed to increase its surface area. The temperature of the sample is then lowered 25°C. What affect do these changes have on the rate of nuclear decay? A.) The decay rate doubles B.

4. Is this equation balanced? Explain your answer. Na + Cl2 → NaCl?

If a substance cannot be broken down chemically into a simpler substance what is it

How do organisms change and why do they change

Which human body system does Erythrocyte most resemble and why

Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas the reactants in this reaction are

CH4 + 202 + CO2 + 2H2O How many grams of CO2 will be produced from 15.0 g of CH4 and 114 g of O2?

A student titrates an unknown amount of potassium hydrogen phthalate (KHC8H4O4, often abbreviated KHP) with 20.46 mL of a 0.1000-M NaOH solution. KHP (molar mass 5 204.22 g / mol) has one acidic hydrogen.