Why is there a danger of explosion in places like coal mines where there are large quantities of powdered, combustible materials?

True or false? For the reaction represented by the balanced chemical equation Mg (OH) 2 (aq) + 2HCl (aq) - > 2H2O (L) + MgCl (aq) for 0.40 mole of Mg (OH) 2, 0.20 mol of HCl will be needed.

Balance the equation: Fe↓2O↓3 ⇒Fe↓3O↓4 + CO↓2

What do S-shadows tell us about the interior of the earth?

In the reaction mg (s) + 2hcl (aq) →mgcl2 (aq) + h2 (g) + MgCl2 (aq) how many grams of hydrogen gas will be produced from 125.0 milliliters of a 6.0 M HCI in an excess of Mg

Which are forms of frozen water? Check all that apply. dew frost hail rain sleet

Which statements are true about the linear inequality y > x - 2? Check all that apply

How is the Gobi Desert different from the Sahara Desert

Which average wind speed do areas need to effectively power wind farms? A:1 mph B:5 mph C:10 mph D:16 mph

What is the total number of moles represented by 20 grams of CACO3 A. 0.1 B. 0.2 C. 1 D. 2

Which describes the polarity in a water molecule? a). partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms b).