Consider this reaction: 3Ca(s) + 2H3PO4(aq) → Ca3(PO4)2(s) +3H2(g)
At STP, how many moles of Ca are required to produce 18.0 liters of H2 ?
0.164 moles
0.804 moles
6.00 moles
0.361 moles

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y

Maddie's rectangular kitchen has an area of 10 square yards and a length of 3 3/4 yards. how many yards wide is maddie's kitchen?