Answer:
Empirical: OH
Molecular: 
Explanation:
First of all, we are going to use the formula: mass = no. moles x Molar Mass And rearrange it to find No. moles: No. moles = mass/Molar Mass
Let's start with Hydrogen:
The given mass is 0.44g, and hydrogen's molar mass is 1.01, therefore the number of moles is: 0.44/1.01 = 0.4356
Now we do the same for Oxygen:
Given mass = 6.92, Molar mass of Oxygen = 16.00, No. Moles = 6.92/16.00 = 0.4325
Now we identify the smaller one (Oxygen as 0.4325 < 0.4356) and we divide both values by that number:
0.4325/0.4325 = 1
0.4356/0.4325 = 1.01
We round both to the nearest 0.2 or 0.25 (depending on what you're taught), and we get: 1 and 1.
This means that the empirical formula has one of each: OH
Now to find the molecular formula we find the relative mass of OH and divide the given mass by that:
M(OH) = 16.00+1.01 = 17.01
34.00/17.01 = 2
We now multiply both by this number to get:
Hope this helped!
Answer:
A prediction is when you believe that something is going to happen. Example: I predict that someone will answer this before me.
Predictions can either be right or wrong.
It can helps us to keep the human body healthy and continue to discover how to keep it healthy, and what keeps it healthy. The study of biology can lead to discovering how to prevent diseases. In the environment, if something is off, then people can use biology to see what is wrong and how to fix it.
Answer:
B
Explanation:
Energy always flows from the sun, to the producer, to the primary consumer, to the secondary consumer, to the tertiary consumer, and so on. Algae has to come after the sun, because it's a producer.
The adrenal glands produce aldosterone<span>, a </span>hormone<span> that controls fluid balance, blood pressure, and salt metabolism. If the adrenals stop producing aldosterone, the body will show many problems: </span>low blood pressure<span> and body fluids (dizzy), as well as low serum sodium and high serum </span>potassium<span> from changes at kidney (salt-craving).</span>
