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Len [333]
3 years ago
9

A. How many moles of ammonium sulfate will be produced with 25.56 grams of ammonia gas

Chemistry
1 answer:
Irina-Kira [14]3 years ago
3 0
I do not know do you?
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Which element is most chemically similar to chlorine
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Halogen, Fluorine, or bromine
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As shown below, a hammer was placed into a graduated cylinder. What is the volume displacement of the hammer?
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Answer:

B. 4 ml

Explanation:

Volume displacement of the hammer = volume volume of water when the hammer was placed into the cylinder - volume of water only before the hammer was placed into the cylinder.

Volume volume of water when the hammer was placed into the cylinder = 69 ml

Volume of water only before the hammer was placed into the cylinder = 65 ml

Volume displacement of the hammer = 69 ml - 65 ml = 4 ml

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Copper has an atomic number of 29 and a mass number of 64. what would result if an uncharged copper atom lost two electrons?
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The atomic mass of an element is the number of times of an atom of that element is  heavier than an atom of carbon taken as 12. In simpler way, atomic mass is number of protons present in  nucleus of an atom, which is a characteristic of an chemical element and is determines place of the element in the periodic table.  Mass number is total number of protons and neutrons. If an uncharged atom looses electron from its outermost shell, it becomes cation, which is positively charged species. Atomic number and mass number do not change if electron goes out of an atom.

Uncharged copper after loosing two electrons is converted to Cu^{2+} which can be represented as follows:

Cu_{29} ^{64}→Cu^{2+}

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Which of the following sentences best describes what is shown in the above picture?
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Cells of a multicellular organism

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How much heat energy is needed to raise the temperature of 59.7g of cadmium from 25°C to 100°C? The specific heat of cadmium is
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     Using the Fundamental Equation of Calorimetry, we have:

Q=mc\Delta T \\ Q=59.7.0.231.(100-25) \\ \boxed {Q=1034.3025J}      

If you notice any mistake with my english, please know me, because I am not native.
7 0
4 years ago
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