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garik1379 [7]
3 years ago
7

Someone please help me real quick pls :(

Chemistry
1 answer:
Genrish500 [490]3 years ago
8 0
Anti-acids because they contain Alkaline ion that chemically neutralizes stomach acid
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Predict the electronegativity of the yet undiscovered element with Z = 119.
Lera25 [3.4K]
We know that the element Z = 119 would be placed right below the Fr, in the column of the alcaline metals.

We also know that the trend in the electronegativity is to decrease when you go up-down ia group.

The known electronegativities of the elements of this group are:

Li: 0.98
Na: 0.93
K: 0.82
Rb: 0.82
Cs: 0.79
Fr: 0.70

Then the hypotetical element Z = 119 would probably have an electronegativity slightly below 0.70, for sure in the range 0.60 - 0.70.



4 0
3 years ago
What does this equation, 2 C(s) + O 2(g) ® 2 CO(g), tell us?
Zanzabum

Answer:

D. All of these.

Explanation:

For an equation to be balanced the number of atoms of each kind in the reactants and the products should be the same.

Then from this equation, CO  is a product.

Last, two carbon atoms undergo reaction with the oxygen molecule for complete reaction to occur. Each atom combines with one oxygen atom.

7 0
3 years ago
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Consider the balanced equation.
Zolol [24]

 <span>The balanced reaction that describes the reaction between hydrogen and nitrogen to produce ammonia is expressed 3H2 + N2 = 2NH3. The yield of the reaction is equal to the actual amount of product divided to the theoretical amount of product multiplied by 100 percent. 26.3 grams of H2 theoretically produces149 grams. The yield is 79 divided by 149 equal to 53.02 percent. </span>

6 0
3 years ago
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Atoms with a low electronegativity,like lithium,have a weak attractive force for electrons because
Murrr4er [49]

Answer:

they're close to filling their outer shell, fulfilling the octet rule

Explanation:

3 0
3 years ago
Locate Lithium and oxygen on the periodic table. Briefly explain how these elements might combine to form a compound.
Mars2501 [29]
<span>Lithium atoms have one valence electron, where as oxygen atoms have six. Lithium atoms tend to give up their single valence electrons, and oxygen tends to gain two valence electrons from other atoms, like lithium. They do this so they will have filled valence shells.  hope this answers your question :)</span>
7 0
3 years ago
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