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Sever21 [200]
3 years ago
12

1.)What is the molarity of a solution that contains 55.0 grams of Na2SO4 in 250 milliliters of solution? (The mass of one mole o

f Na2SO4 is 142 grams.)
1.55 M


0.0968 M


10.3 M


0.645 M


2.)Which of the following describes the properties of an acid?


are generally proton donors


produce H+ ions in solution


are electron pair acceptors


may include all of these characteristics


3.)The greater the percent ionization of an acid, the __________.


stronger the acid


weaker the acid


more hydrogen atoms the acid molecule has in its formula


more [OH-] ions are in solution


4.)What do larger values on the pH scale represent?


higher concentration of H3O+ ions


lower concentration of H3O+ ions


lower concentration of OH- ions


more acidic the solution
Chemistry
1 answer:
Maurinko [17]3 years ago
4 0

1)<em>1</em><em>.</em><em>5</em><em>4</em><em>9</em><em>=</em><em>1</em><em>.</em><em>5</em><em>5</em><em>M</em>

2)<em>m</em><em>a</em><em>y</em><em> </em><em>i</em><em>n</em><em>c</em><em>l</em><em>u</em><em>d</em><em>e</em><em> </em><em>a</em><em>l</em><em>l</em><em> </em><em>o</em><em>f</em><em> </em><em>t</em><em>h</em><em>e</em><em>s</em><em>e</em><em> </em><em>c</em><em>h</em><em>a</em><em>r</em><em>a</em><em>c</em><em>t</em><em>e</em><em>r</em><em>i</em><em>s</em><em>t</em><em>i</em><em>c</em><em>s</em>

3)<em>s</em><em>t</em><em>r</em><em>o</em><em>n</em><em>g</em><em>e</em><em>r</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>a</em><em>c</em><em>i</em><em>d</em>

4)<em>l</em><em>o</em><em>w</em><em>e</em><em>r</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>c</em><em>o</em><em>n</em><em>c</em><em>e</em><em>n</em><em>t</em><em>r</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>o</em><em>f</em><em> </em><em>H</em><em>3</em><em>O</em><em>+</em><em> </em><em>i</em><em>o</em><em>n</em><em>s</em>

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lina2011 [118]

Opinions are differ from facts as that we cannot change the facts but opinions can be changed as in first example it is given anthracite is better than bituminous coal may be there is another coal which is more better than anthracite. So here opinion is changed.

<h3>What is Coal ?</h3>

It is a black or brownish black sedimentary rock. It contains Sulphur, hydrogen, oxygen, carbon etc. It is always preferred as fuel. Coal was formed millions years ago when plant decay in the soil. It is obtained from dead vegetation. It is obtained from dead plants matter decay into peat and then it is converted into the coal by the process of heat.

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Thus from the above conclusion we can say that Opinions are differ from facts as that we cannot change the facts but opinions can be changed as in first example it is given anthracite is better than bituminous coal may be there is another coal which is more better than anthracite. So here opinion is changed.

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2 years ago
A bowling ball rests on the floor. The bowling ball is given a push.
lyudmila [28]

Answer:

A. It will move.

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What chemical substance is formed when the oh and h is joined?
Nezavi [6.7K]
Water is formed when this happens
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3 years ago
What is the mass of 4.38 x 10^24 formula units of sodium chloride (NaCl)?
lana66690 [7]

Answer:

Mass = 427.05 g

Explanation:

Given data:

Formula units of sodium chloride = 4.38 ×10²⁴

Mass of NaCl = ?

Solution:

One mole contain formula units = 6.022 ×10²³

4.38×10²⁴ formula units × 1mol /6.022 ×10²³ formula units

0.73 ×10¹ mol

7.3 mol

Mass of NaCl:

Mass = number of moles × molar mass

Mass = 7.3 mol × 58.5 g/mol

Mass = 427.05 g

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