Most of the heat from the sun that

reaches Earth's surface is absorbed by

the atmosphere.

the oceans.

manmade structures.

land.

Mitochondria are organelles that 1) store digestive enzymes 2) package cell products 3) release energy from nutrients 4) manufacture cell protein

The ___ is the measurement of the energy change when an electron is added to a gaseous neutral atom.

Hard water often contains dissolved Ca2 + and Mg2 + ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.

Two 0.9mL aliquots of the same specimen are placed in test tubes. To one is added 0.1 mL of water (spec A). To the other is added 0.1 mL of 200 mg/dl urea (spec B). They are analyzed for their results: Spec A: 25 mg/dl, Spec B: 43 mg/dl.

When the supply of oxygen is limited, iron metal reacts with oxygen to produce a mixture of and. in a certain experiment, 20.00 g iron metal was reacted with 11.53 g oxygen gas. after the experiment, the iron was totally consumed, and 3.

Given: logK=nE∘0.0592 What is the value K for this redox reaction? Zn2 + (aq) + 2 Cl - (aq) → Zn (s) + Cl2 ( g. Ecell = - 2.12 V

What is 350 kelvin on the Celsius scale of temperature?

The correct formula for magnesium nitrate? Question 12 options: MgNO3 Mg2NO3 Mg (NO3) 2 Mg2 (NO3) 2

A buffer is prepared by adding 100 mL of 0.50 M sodium hydroxide to 100 mL of 0.75 M propanoic acid. Is this a buffer solution, and if so, what is its pH?

Explain the answer and how you to round the answer with proper sig figs for the following equation, 4389 / 28.7?