Three students wear signs with a "t" sign, representing?

Look at the chemical equation: 2H2S + 3O2 → 2H2O + 2SO2 How many atoms of hydrogen (H) are present on both sides of the equation? A. 2 B. 3 C. 4 D. 6

What is the number of valence electrons in each of the main groups on the periodic table?

When a supply of hydrogen gas is held in a 4 liter container at 47°C it exerts a pressure of 800 torr. The supply is moved to a 2000 mL container, and cooled to - 113°C. What is the new pressure of the confined gas?

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

Which material has a crystalline structure at room temperature (20 degrees Celsius) 1. Water 2. glass 3. Nitrogen 4. Sucrose

Describe what a polar covalent bond is and name a common compound that has a polar covalent bond holding it together

Part a:we can determine the purity of solid materials by using calorimetry. a gold ring (for pure gold, specific heat = 0.1291 j⋅g-1⋅k-1) with mass of 10.5 g is heated to 78.3 ∘c and immersed in 50 g of 23.

How has desertification impacted the environment in Latin America?

In a titration experiment, hcl and lioh solutions were used. the initial volume of hcl was 1.25ml and lioh was 2.65 ml. the final volume of hcl was 13.60 ml and lioh was 11.20 ml. if the lioh was 0.140 m what was the molarity of hcl?

What is the mass of 0.200 moles of Fe