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12345 [234]
3 years ago
15

Someone please help will mark as brainliest

Chemistry
1 answer:
ohaa [14]3 years ago
5 0

Answer:

Adding more solute would increase the concentration.

Explanation:

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All atoms of an element have the same number of ________. electrons neutrons protons protons plus neutrons
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Answer:

protons

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An element, by definition, always has the same number of protons.  Sodium, element 11, has 11 protons.  Anything with 11 protons is a sodium atom, regardless of the number of neutrons, electrons, or politicians.  

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2 years ago
A nuclear waste site. cesium-137 is a particularly dangerous by-product of nuclear reactors. it has a half-life of 30 years. it
hram777 [196]
The mass decay rate is of the form
m(t) = m_{0} e^{-kt}
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m₀ = 3000 g,the initial mass
k = the decay constant
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Because the half-life is 30 years, therefore
e^{-30k} =  \frac{1}{2} \\\ -30k = ln(0.5) \\ k =  \frac{ln(0.5)}{-30} =0.0231

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m = 3000 e^{-0.0231*60} = 750 \, g

Answer: 750 g

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3 years ago
A compound has a molar mass of 26g/mol and an empirical formula of CH. What is the molecular formula?
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Adenine (a) pairs with a: cytosine (c) B: Guanine (g) C: Thymine (T)
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I need help on this asp
k0ka [10]

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copper or steel

Explanation:

hope this helps

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