How many moles of table salt are found in 400 g of NaCI

Place coefficients in the reactants and or products to balance the following chemical reactions. 1. Fe + S FeS 2. H2 + Cl2 HCl 3. Mg + O2 MgO 4. O2 + H2 H2O 5. HgO Hg + O2 6. Ca + H2O Ca (OH) 2 + H2 7. CH4 + O2 CO2 + H2O 8.

C2H4 + O2 → 2C + 2H2O Mg + H2O → MgO + H2 N2 + 2O2 → 2NO2 S + O2 → S + H2O Which of the following is a valid combustion reaction?

Condensation is a chemical reaction that releases

The formula mass of a molecule or ion is

Given the unidentified isotope 137 67X, which number stands for protons, electrons, and neutrons?

how do geologists use seismic waves to locate an earthquakes epicenter

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine that there are 5 grams of potassium-40 in the rock.

What are some positive and negative effects of the production of maple syrup on society and the environment?

Describe and give an example of parasitism.