Which class of lever has the fulcrum between the effort force and the resistance force

First

Second

Third

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 19.2 g of carbon were burned in the presence of 68.9 g of oxygen, 17.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

Mass of an atom of zinc

What is the molarity of the unknown hcl solution?

When the amount of oxygen is limited, carbon and oxygen react to form carbon monoxide. How many grams of CO can be formed from 35.0 grams of oxygen? 2C + O2 → 2CO Using 32.00 g/mole as the molecular mass of oxygen and 28.

Which is the name for SO3? silver oxide trisulfur oxide sulfur trioxide silver trioxide

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.00 L of 0.500 M NH4NO2 decomposes at 25.0°C?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?

Drinking water may contain a low concentration of lead ion (Pb2) due to corrosion of old lead pipes. The EPA has determined that the maximum safe level of lead ion in water is 15 ppb.

A student examines the temperature and precipitation on a given day using a thermometer and a rain gauge. The student is measuring- A. temperature only B. climate only C. wind speed only D. specific weather conditions

Atoms - 1 2 3 4 Protons - 8 10 9 8 Neutrons - 10 9 9 11 Electrons - 8 10 9 8 Which two are isotopes of one another?