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dem82 [27]
4 years ago
5

True or false a mixture is made of two or more elements that are chemically combined

Chemistry
1 answer:
FromTheMoon [43]4 years ago
5 0
False. A mixture represents elements or molecules which are not chemically combined.
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Imagine that you helped to discover a new element:
bulgar [2K]

Answer:

Proton = 119

Electron = 119

Neutron = 183

Explanation:

Mass number (A) = 302

Atomic number (Z) = 119

Proton = atomic number = 119

Since there is no charge on the element, it means the element is neutral.

Therefore,

Electron = proton = 119

Mass number = proton + Neutron

Neutron = Mass number — proton

Neutron = 302 — 119

Neutron = 183

7 0
3 years ago
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Use the periodic table to answer the questions below.
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The electron configuration for N is 1s^2 2s^2 2p^3, or it could be [He]2s^2 2p^3 but you don’t have the diagram out so I can’t say the definite answer
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3 years ago
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Identify the number of significant figures in each measurement.
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0.052301= 6 sig. figure
400 cm. = 3 significant figures
50.0. =. 3. Significant figure
4500.01=. 6 significant figure
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3 years ago
What are the two flasks for measuring the liquid volume?
aleksandrvk [35]

Answer:

Liquid volume is usually measured using either a graduated cylinder or a buret.

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Which change in oxidation number represents reduction?
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THE ANSWER IS B. The reducing of oxidation state (-1 to -2, a change of -1, a REDUCTION) is what makes it a reduction.
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