Why full moon makes your crazy

When copper metal is added to silver nitrate in solution, silver metal & copper (ii) nitrate are produced. What mass of silv

Harrizon [31]

Answer:

$\large \boxed{\text{339 g}}$

Explanation:

We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.

MM: 63.55 107.87

Cu + 2AgNO₃ ⟶ Cu(NO₃)₂ + 2Ag

m/g: 100

(a) Moles of Cu

$\text{Moles of Cu} = \text{100 g Cu }\times \dfrac{\text{1 mol Cu}}{\text{63.55 g Cu}}= \text{1.574 mol Cu}$

(b) Moles of Ag

$\text{Moles of Ag} = \text{1.574 mol Cu} \times \dfrac{\text{2 mol Ag}}{\text{1 mol Cu}} = \text{3.147 mol Ag}$

(c) Mass of Ag

$\text{Mass of Ag} =\text{3.147 mol Ag} \times \dfrac{\text{107.87 g Ag}}{\text{1 mol Ag}} = \textbf{339 g Ag}\\\\\text{The reaction produces $\large \boxed{\textbf{339 g}}$ of Ag}$

6 0

4 years ago

Part 1: Name two elements that have the same properties as potassium (K). (4 points)

andre [41]

Answer:

Part 1: Sodium and Rubidium.

Part 2:

Protons = 12

reason: protons are equal to the atomic number of an atom. For Magnesium, atomic number is 12.

Neutrons: 

$= { \tt{24 - 12 }} \\ = { \tt{12 \: neutrons}}$

reason: neutrons is given by formula:

${ \tt{neutrons = mass \: number - atomic \: number}}$

where mass number of magnesium is 24.

electrons: = 12 electrons

reason: Magnesium atom has electrons summing up to 12

4 0

3 years ago

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11. A 4.175 gram sample of a certain hydrate of copper (II) sulfate, CuSO,• xH,O, is heated until all

Wewaii [24]

The formula of the hydrate = CuSO₄• 3H₂O

<h3>Further explanation</h3>

Given

4.175 grams sample CuSO₄• xH₂O

3.120 grams anhydrous compound CuSO₄

Required

The formula

Solution

mass of H₂O driven off :

= 4.175 - 3.12

= 1.055 g

MW CuSO₄ = 159.5 g/mol

MW H₂O = 18 g/mol

mol ratio of CuSO₄ : H₂O :

= 3.12/159.5 : 1.055/18

= 0.01956 : 0.05861

= 1 : 3

3 0

3 years ago

100.0 g water cools from 85.0°C to 20.0°C. If the specific heat of water is 4.18 J/g°C, calculate the change in energy.

Natali5045456 [20]

Answer:

-27.2 kJ

Explanation:

We can use the heat-transfer formula. Recall that:

$\displaystyle q = mC\Delta T$

Where m is the mass, C is the substance's specific heat, and ΔT is the change in temperature.

Hence substitute:

$\displaystyle \begin{aligned} q & = (100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(20.0\text{ $^\circ$C} - 85.0\text{ $^\circ$C}) \\ \\ & =(100.0\text{ g})\left(\frac{4.18\text{ J}}{\text{g-$^\circ$C}}\right)(-65.0\text{ $^\circ$C}) \\ \\ & = -2.72\times 10^4\text{ J} = -27.2\text{ kJ}\end{aligned}$

Therefore, the cooling of the water released about 27.2 kJ of heat.

5 0

3 years ago

Uhm cell parts and functions

sergiy2304 [10]

A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells

two types of cell

1) Prokaryotes

2) Eukaryotes

Characteristics of Cells

1) Cells provide structure and support to the body of an organism.

2) The cell interior is organised into different individual organelles surrounded by a separate membrane.

3) The nucleus (major organelle) holds genetic information necessary for reproduction and cell growth

$hope \: its \: helpful \: to \: you \: please \: mark \: me \: a \: brainliest$

5 0

3 years ago

Read 2 more answers