n a science experiment, farah mixed a salt solution and
vinegar in the ratio 3 : 7.
A.) if she used 262.8 milliliters of salt solution, the
amount of vinegar is equal to:
X = 262.8 ml ( 7 ml vinegar/ 3 ml salt soln)
X = 613.2 ml vinergar
B.) y = 0.56 L vinegar ( 3 L salt soln/ 7 L vinegar)
Y = 0.24 L salt soln
B using more coal to make electricity
Answer:
C, -7+12
Step-by-step explanation:
-7--12= 5
-7--12 can also be -7+12
solution:
its simple volume of 1 sand grain = (0.10 mm)³ = 0.001 mm³
1 mole sand x (6.02214x10^23 grains / mole) x (0.001 mm³ / grain) = 6.02214x10^20 mm³
268,601 mi² x (5280 ft / mi)² x (12 in / ft)² x (2.54 cm / in)² x (10 mm / 1 cm)² = 6.95673x10^17 mm²
V = height x area
height = V / A = 6.02214x10^20 mm³ / 6.95673x10^17 mm² = 865.657 mm
finally...
865.657 mm x (1 cm / 10 mm) x (1 in / 2.54 cm) x (1 ft / 12 in) = 2.84008 ft... 6 sig figs.
3,5,7,2 is the correc tnaswer
