The formula for iron(II) sulfate is

a. Fe2SO4.
b. Fe2(SO4)2.
c. Fe(SO4)2.
d. FeSO4.


d

Physics & Space Science

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Water from streams in northern Utah flow to

A) the Atlantic Ocean. B) the Gulf of Mexico. C) the Pacific Ocean. D) Colorado.

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Cal is viewing the Moon with his new telescope, using a 10-mm focal length eyepiece. For greater detail, he wishes to double the magnification of his telescope

An eyepiece having which one of the following characteristics will accomplish this for him? A) 40 diopters B) 8 mm C) 12 mm D) 200 diopters E) 5 diopters

Physics & Space Science

Explain why observations suggest the presence of dark energy in the universe.?

What will be an ideal response?

Physics & Space Science

Young's Modulus: A vertical 30-cm steel rod, 1.0 cm in diameter, supports a 300-kg mass. What is the change in length of the rod caused by this mass? Young's modulus for steel is 2.0 × 1011 N/m2.

A. 5.6 × 10-5 m B. 6.5 × 10-5 m C. 5.6 × 10-6 m D. 6.5 × 10-6 m E. 6.5 × 10-4 m

Physics & Space Science