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tamaranim1 [39]
3 years ago
7

An arrhenius base is a compound consisting of hydroxide ions and _____.

Chemistry
1 answer:
Bad White [126]3 years ago
4 0
Acids are hydrogen-containing compound that ionize to yield hydrogen ions (H⁺) in an aqueous solution
-bases are compound that ionize to yield hydroxide ions (OH⁻) in an aqueous solution
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What do all group 2 elements have in common? (2 points) they all gain two electrons to form a stable outer energy level. They fo
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The correct answer would be the last option.  The property that is common to all group 2 elements is that they  tend to form ionic bonds by losing electrons making these atoms positive charge. They are called cations. These elements are beryllium, magnesium, calcium, strontium, and radium. 
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3 years ago
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What mass of H2 is needed to react with 8.75 g of O2 according to the following equation: O2(g) + H2(g) → H2O(g)?
Alika [10]

Answer:- B: 1.10g H_2 is the right answer.

Solution:- The balanced equation is:

O_2(g)+2H_2(g)\rightarrow 2H_2O(g)

We have been given with 8.75 grams of oxygen and asked to calculate the grams of hydrogen needed to react with given grams of oxygen according to the balanced equation.

From balanced equation, 1 mole of oxygen reacts with 2 moles of hydrogen.

So, let's convert grams of oxygen to moles and multiply it by the mole ratio to calculate the moles of hydrogen that are easily converted to grams on multiplying by it's molar mass.

The complete set up looks as:

8.75g O_2(\frac{1mole}{32g})(\frac{2mole H_2}{1mole O_2})(\frac{2.02g}{1mole})

= 1.10g H_2

Hence, the right option is B: 1.10g H_2 .



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3 years ago
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Which of the following observations about pH is consistent for an acidic solution?
kow [346]

Answer:

A pH value of 3

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The pH scale has 14 numbers:

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5 0
1 year ago
What type of chemical bond is hydrogen?
oksian1 [2.3K]
Hydrogen is a covalent bond. (A bond where one or more pairs of electrons are shared by two atoms)

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C is correct. Have a good day!
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