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sergij07 [2.7K]
3 years ago
7

B. Each atom is neutrally charged, which means that each atom has the same number of protons and

Chemistry
1 answer:
vesna_86 [32]3 years ago
6 0
Sodium has 11 protons and Chlorine has 17.
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Which element has the lowest atomic mass?
bekas [8.4K]

Answer:

Hydrogen

Explanation:

Hydrogen has only 1 proton and has an atomic mass of 1. It does not have neutrons. Helium and above have higher mass than Hydrogen.

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What color does ammonia change red cabbage juice into? and is the material an acid or an alkali?
notsponge [240]

Explanation:

Red cabbage contains a water-soluble pigment called anthocyanin that changes color when it is mixed with an acid or a base. The pigment turns red in acidic environments with a pH less than 7 and the pigment turns bluish-green in alkaline (basic), environments with a pH greater than 7.

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Which is a characteristic of mixtures?
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Answer:

A major characteristic of mixtures is that the materials do not chemically combine

Explanation:

Mixtures can be divided into those that are evenly distributed (homogeneous) and those that aren't (heterogeneous)

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What is the formula for this ionic crystal?
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Answer:

Al₄O₅

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    The key at the bottom tells us the blue spheres are oxygen atoms and the red spheres are aluminum atoms. By counting, there are 4 aluminum atoms and 5 oxygen atoms. Therefore, the formula is Al₄O₅.

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3 years ago
Why does increasing the number of trials increase confidence in the results of the experiment?
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<span>It rises confidence for the reason that the more times you conduct the similar experiment over and over should either demonstrate your hypothesis right and wrong and remove any random incidences that might touch your results. Meaning it permits to have a more accurate measure or conclusion.</span>
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