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damaskus [11]
3 years ago
8

If an atom contains more electrons than protons, it is a action, an anion, or electrically neutral

Chemistry
1 answer:
barxatty [35]3 years ago
6 0
Electrons hold a negative charge, and anion refers to a negatively charged atom.

The answer is anion. Here's a way to help remember:

Cats have paws, and cations are "paws"itive (positive).
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What mass of silver oxide, Ag2O is required to produce 25.0 g of silver sulfadiazine, AgC10H9N4SO2, from the reaction of silver
Wittaler [7]

Answer:

8.1107 g

Explanation:

The given reaction:

2C_{10}H_{10}N_4SO_2+Ag_2O\rightarrow 2AgC_{10}H_9N_4SO_2+H_2O

Given that:

Mass of silver sulfadiazine = 25.0 g

Molar mass of silver sulfadiazine = 357.14 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{25.0\ g}{357.14\ g/mol}

Moles= 0.07\ mol

From the reaction,

2 moles of silver sulfadiazine are formed from 1 mole of silver oxide

So,

1 mole of silver sulfadiazine are formed from 1/2 mole of silver oxide

0.07 mole of silver sulfadiazine are formed from 1/2*0.07 mole of silver oxide

Moles of silver oxide = 0.035 moles

Molar mass  of silver oxide = 231.735 g/mol

Mass = Moles * Molar mass = 0.035 moles * 231.735 g/mol = 8.1107 g

4 0
3 years ago
Which of the following samples will have the lowest pressure if they are all at the same temperature and in identical containers
snow_lady [41]

Answer:

c. 15 g Kr

Explanation:

The amount of a gas (Moles) is directely proportional to its pressure. That means the higher amount of moles, the highest pressure and vice versa.

Using molar mass of the compounds (Ne=20.2g/mol, Ar = 39.9g/mol, Kr = 83.8g/mol, CO₂ = 44 g/mol and F₂ = 38.0g/mol), moles of 15.0g of each gas are:

Ne = 15g ₓ (1mol / 20.2g) = <em>0.74 moles of Ne</em>

Ar = 15g ₓ (1mol / 39.9g) = <em>0.38 moles of Ar</em>

Kr = 15g ₓ (1mol / 83.8g) = <em>0.18 moles of Kr</em>

CO₂ = 15g ₓ (1mol / 44g) = <em>0.34 moles of CO₂</em>

F₂ = 15g ₓ (1mol / 38g) = <em>0.39 moles of F₂</em>

<h3>As 15g of Kr contains the less quantity of moles, this sample will con have the lowest pressure</h3>
8 0
3 years ago
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Amanda [17]

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What is the volume of 1g of ice in cm3?

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