A compound is found to contain 3.622 % carbon and 96.38 % bromine by mass. To answer the question, enter the elements in the order presented above.

QUESTION 1: The empirical formula for this compound is .

QUESTION 2: The molecular weight for this compound is 331.6 amu. The molecular formula for this compound is

Answer::

Explanation::

Answer: 0.5 g/cm^3

Density equals mass divided by volume so..

60/120 is 0.5 g/cm^3

The mass of FeSO4*7H2O in the sample is 1.21 grams.

Calculate moles of Fe2O3

moles of Fe2O3 = mass of Fe2O3 / Molar mass of Fe2O3

moles of Fe2O3 = 0.348 grams / 159.69 g/mole = 0.00218 moles

Calculate moles of Fe

4 Fe + 3O2 → 2Fe2O3

For 4 moles of Fe consumed there is 2 moles of Fe2O3 produced

This means it has a ratio 2:1

So 0.00218 moles of Fe2O3 produced , there is 2*0.00218 = 0.00436 moles of Fe consumed

Calculate moles of FeSO4*7H2O

Fe + H2SO4 + 7H2O → FeSO4*7H20 + H2

For 1 mole of Fe consumed there is 1 mole of FeSO4*7H2O produced

This means for 0.00436 moles there is 0.00436 moles of Fe2SO4*H2O produced

Calculate the mass of FeSO4*7H2O in the sample

mass of FeSO4*7H2O = 0.00436 moles * 278.01 g/mole = 1.212 g

The mass of FeSO4*7H2O in the sample is 1.21 grams.

Complete question: A powder contains FeSO4⋅7H2O (molar mass=278.01 g/mol), among other components. A 3.930 g sample of the powder was dissolved in HNO3 and heated to convert all iron to Fe3+. The addition of NH3 precipitated Fe2O3⋅xH2O, which was subsequently ignited to produce 0.348 g Fe2O3. What was the mass of FeSO4⋅7H2O in the 3.930 g sample?

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Answer:

You must get a solution of HCl that has a higher molarity than 8.0M . Check the exact molarity by titrating against a standard NaOH solution. Measure out 815.5 mL of the 9.18 M HCl solution and dilute to final volume = 1000 mL with distilled water.

Explanation:

It is very difficult to calculate how to make 8M HCl in 1000 mL water

I will calculate : How to make 8 M HCl in 1000 mL SOLUTION.

NOTE : IMPORTANT: in 1000 mL SOLUTION

You must get a solution of HCl that has a higher molarity than 8.0M . Check the exact molarity by titrating against a standard NaOH solution.

Say that the molarity = 9.18M

Now calculate the volume required:

M1V1 - M2V2

9.18 * V1 = 8 M* 1000 mL

V1 = 8 M * 1000 mL / 9.18M

V1 = 871.5 mL

Measure out 871.5 mL of the 9.18 M HCl solution and dilute to final volume = 1000 mL with distilled water.

Answer:

Gas D

Explanation:

liters at 30 °C

Answer:

A

Explanation:

Answer:

True if by rifting you mean continental rift. If not idk.

Explanation:

1 mole is defined as the number of particles in 12 g of C12 (Carbon 12). If it were 24 g, instead of 12 g, then the weight of 1 mole of a substance would equal 2 times the atomic or molecular mass in g.

So, in other words, the mole is related to the mass of an element in the following way: 1 mole of C-12 atoms has 6.022x10^23 atoms and a mass of 12 g.

Answer: C. Equal to its atomic mass

If greenhouse gases in the atmosphere continues to increase, then the  

average temperature of Earth will increase too.

Greenhouse gases such as carbon dioxide and methane deplete the ozone

layer which shields the earth from radiations from the Sun. An increase in

these gases will therefore allow for more radiations to get to the earth.

This therefore brings about an increase in the average temperature of the

earth.

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Answer:

So when a cat puts up its middle finger its usually trying to scare you off.

Explanation:

it's gonna kill you.

Sodium carbonate, also known as washing soda or soda ash, has a wide range of applications. Sodium carbonate can be naturally occurring or synthetically produced through various methods, including the Solvay process, which is the most common method of industrial production.

Sodium carbonate, also known as washing soda or soda ash, has many uses, including:

1) Cleaning agent: Sodium carbonate is an effective cleaning agent due to its alkaline nature. It is used in laundry detergents and household cleaners to remove stains and grease from clothes and surfaces.

2) Industrial applications: Sodium carbonate is used in a variety of industrial applications. It is used in the production of glass, pulp and paper, and soaps and detergents. It is also used as a water softener and pH regulator in chemical processes.

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Explanation:

there is one missing letter.

hope it is helpful to you

The terrain can have a significant impact on the behavior and spread of forest fires. Understanding the terrain and its effect on fires can help firefighters and land managers develop effective strategies for preventing and managing wildfires.

Terrain plays a significant role in the behavior and spread of forest fires. Here are some ways that terrain can affect forest fires:

Slope: The slope of the terrain can affect the speed and direction of the fire. Fires tend to spread faster uphill due to the preheating effect of the rising heat, which dries out the fuel and ignites it more easily. Steep slopes can also create a chimney effect, where hot gases and flames rise rapidly, increasing the intensity of the fire and making it more difficult to control.

Aspect: The aspect, or the direction that a slope faces, can also impact the behavior of a forest fire. South-facing slopes tend to be warmer and drier, and may ignite more easily. North-facing slopes, on the other hand, may be cooler and moister, and may not burn as easily.

Topography: The topography of the terrain can affect the spread of fire by creating wind patterns, funneling the fire, or obstructing firefighting efforts. For example, canyons, ridges, and valleys can channel and accelerate the spread of the fire, while cliffs, boulders, and waterways can create natural fire breaks that help to contain the fire.

Fuel type and density: The type and density of vegetation in a forest can vary depending on the terrain. For example, steep slopes may have thinner vegetation cover, while flat areas may have thicker vegetation. The type of vegetation can also vary by elevation, with lower elevations having more grasses and shrubs, and higher elevations having more trees. Different types of vegetation burn at different rates and temperatures, and can affect the intensity and behavior of the fire.

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Answer:

The molarity of the solution is 0.99M.

Explanation:

The molaruty if a solution represents the amount of solute moles contained in 1 liter (1000ml) of a solution.

1st) In this case, we have 17.3g of KCl, so we have to use the KCl molar mass (74.5g/mol) to convert grams into moles:

Now we know that there are 0.23 moles of the solute KCl.

2nd) We have 0.23 moles of KCl contained in 231 mL of solution, so to calculate the molarity (moles of solute contained in 1000mL of solution), we can use a mathematical rule of three:

Finally, the molarity of the solution is 0.99M.

Answer:

B) 10.1g

Explanation:

Answer:

10.1 g

Explanation:

Answer:

2 CH₃OH  +  3 O₂  ⇒  2 CO₂  +  4 H₂O

Explanation:

Methanol is CH₃OH.  Oxygen is O₂.  A combustion produces CO₂ and H₂O.  Create an equation using this information and balance.

CH₃OH  +  O₂  ⇒  CO₂  +  H₂O

2 CH₃OH  +  3 O₂  ⇒  2 CO₂  +  4 H₂O

The balanced equation for the combustion of liquid methanol in air, assuming H2O(g) as a product is

CH₃OH(l) + O₂(g) → CO₂(g) + H₂O(g)

From the question,

We are to write a balanced equation for the combustion of liquid methanol in air.

The combustion of liquid methanol in air is the reaction between methanol (CH₃OH) and oxygen (O₂). The reaction yields carbon(IV) oxide and water.

Now, for the balanced equation for the combustion of liquid methanol in air

The balanced chemical equation is

CH₃OH(l) + O₂(g) → CO₂(g) + H₂O(g)

Hence, the balanced equation for the combustion of liquid methanol in air, assuming H2O(g) as a product is CH₃OH(l) + O₂(g) → CO₂(g) + H₂O(g)

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Answer:

True.

Explanation:

Answer:

the effluent concentration is 0.06236 mg/L

Explanation:

Given that;

treatment capacity \(V_{0}\) = 3,800 m³/d =  ( 3,800 × 86.4) =  43.98 L/sec

reactor's volume V = 45 m³ = (45 × 1000) = 45,000 L

reaction rate constant K =  0.0125 s⁻¹

influent manganese concentration \(CA_{0}\) = 0.86 mg/L

-\(r_{A}\) = \(KC_{A}\)

Now, performance equation for CSTR is expressed as follows;

\(\frac{V}{V_{0} }\) = \(\frac{CA_{0} -CA _{} }{-r_{A} }\)

\(\frac{V}{V_{0} }\) = \(\frac{CA_{0} -CA _{} }{KC_{A} }\)

So we substitute

45000L / 43.98 L/sec = ( 0.86 mg/L - CA) / 0.0125 CA

we cross multiply

562.5CA = 37.8228 - 43.98CA

562.5CA + 43.98CA = 37.8228

606.48CA = 37.8228

CA = 37.8228 / 606.48

CA = 0.06236 mg/L

Therefore, the effluent concentration is 0.06236 mg/L

Answer: 4

Explanation: because the zero doesn't count

Answer:Ca

Explanation:

Answer:

Explanation: K+ has a higher ionisation energy than Ca+ , so K has a higher second ionisation energy than Ca .

The amount of sodium azide required will be 123.72 grams

From the equation of the reaction below:

\(2NaN_3 --- > 2Na + 3N_2\)

The mole ratio of sodium azide to nitrogen gas is 2:3

Mole of 80.0 g nitrogen = 80/28.02 = 2.855 moles

Equivalent mole of sodium azide = 2/3 x 2.855 = 1.903 moles

Mass of 1.903 moles sodium azide = 1.903 x 65 = 123.72 grams

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The average atomic mass of titanium on the given planet is approximately 46.68164 atomic mass units (u). The average atomic mass may vary depending on the specific isotopic composition of titanium found on different celestial bodies or regions.

To calculate the average atomic mass of titanium on the given planet, we need to consider the natural abundances and masses of each isotope of titanium.

The average atomic mass is calculated by multiplying the natural abundance of each isotope by its respective mass and summing them up.

Let's perform the calculation step by step:

Step 1: Multiply the abundance of each isotope by its mass:

(73.700% * 45.95263 u) + (15.000% * 47.94795 u) + (11.300% * 49.94479 u)

Step 2: Calculate the individual contributions from each isotope:

= (0.737 * 45.95263) + (0.150 * 47.94795) + (0.113 * 49.94479)

Step 3: Add up the individual contributions:

= 33.84765431 + 7.1921925 + 5.64179347

Step 4: Sum up the contributions:

= 46.68164 u

Therefore, the average atomic mass of titanium on the given planet is approximately 46.68164 atomic mass units (u).

It's important to note that the calculation assumes the provided natural abundances are accurate and representative of the titanium isotopes on that planet.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

: kinetic energy is the energy transformation that occurs in a hot balloon.

Explanation:

Hot air balloons use a propane burner that converts chemical energy to thermal energy. The hot air is less dense than than the colder air and it lifts the balloon

Answer:regulating body temperature

Explanation:

The index of hydrogen deficiency (IHD) is a measure of the number of unsaturated bonds in a molecule. It can be calculated by subtracting the number of hydrogen atoms from 2 times the number of carbon atoms, and then dividing by 2.

\(C_{6}H_{6}\) (no oxygen)

IHD = \(\frac{(2*6)-6}{2}\) = 3

This means that the molecule contains 3 unsaturated bonds, which can form 3 aromatic rings.

\(C_{7}H_{6}O\) (one oxygen)

IHD = \(\frac{(2*7)-6-2}{2}\) = 3

This means that the molecule contains 3 unsaturated bonds, which can form 2 aromatic rings.

\(C_{8}H_{7}O_{2}\) (two oxygens)

IHD = \(\frac{(2*8)-7-(2*1)}{2}\) = 2

This means that the molecule contains 2 unsaturated bonds, which can form 2 aromatic rings.

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Complete question:

Give a molecular formula for your product if it contains no oxygens. Give the molecular formulas if your product contains one and two oxygens (some may not be possible).

The molecular formula for if my molecule does not have any oxygens is C6H6, if it has one oxygen it would be C7H6O, if it was two it would be C8H7O2.

Calculate the index of hydrogen deficiency, and therefore the number of rings and/or p- bonds in your unknown for each of the molecular formulas in question 3. Show your calculation

Answer: