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White raven [17]
3 years ago
8

Answering the easy questions first is

Chemistry
1 answer:
Setler79 [48]3 years ago
8 0

Answer:

ddfdsfd

Explanation:

sdgh   hjrtj

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How many grams of H3PO4 are in 175mL of a 2.50M solution of H3PO4?
solmaris [256]
<span>(0.1875 moles)(98.004 g/mole) = 18.37575 g </span>
<span>In correct number of significant figures: 18.4 </span>
5 0
3 years ago
Read 2 more answers
A gas has a volume of 45 L at a pressure of 140 kPa. What is the volume when
suter [353]

Answer:

21 L

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

8 0
4 years ago
What relationship is described by the formula below? (mass of the element/mass of the compound) x 100
Fiesta28 [93]
Introduction
empirical formula
A table of values shows a list of the values for an independent variable, x, matched with the value of the dependent variable, y. In many cases, an equation can be used to relate the two values. If you know the equation, you can easily generate a table of values.


If you are given the table of values, you must determine how the two values are related and then write an equation that shows the relationship.

xy-2-1-100112When looking at the relationship between the y-values and the x-values, it's easy to see that each y-value is 1 more than the x-value. Therefore, the equation that describes this relationship is y = x + 1.

 

Develop a Rule When Given a Table of Values

Writing an Equation for a Table of Values

Look at the table below. There does not appear to be a constant rate of change.



In this example, we look at the ratio of the change in the pattern of y-values and x-values.









Even though there did not appear to be a constant rate of change, there is actually a constant rate of change of 2.

We're almost ready to write our equation.

We now know the value for m (the slope) in the equation y = mx + b is 2. Since m is 2, we know that each x-value is being multiplied by 2.

What else is happening to the x-value to get the corresponding y-value?

xProcessy-32(-3) + 3-3-12(-1) + 3132(3) + 3962(6) + 31572(7) + 317

We also need to add 3 to the product in order to get the corresponding y-value.

The equation that represents this table of data is y = 2x + 3.


6 0
3 years ago
How does a sedimentary rock turn into a metamorphic?
IgorLugansk [536]

metamorphic  rock can change into igneous or sedimentary rock. 

6 0
3 years ago
I need help on first wuestion
yawa3891 [41]

Answer:

Atom then element

Explanation:

Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles. Every atom contains a central core called the nucleus, made of particles called protons and neutrons.

An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.

3 0
3 years ago
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