What volume in milliliters of 0.0130 M Ca(OH)₂ is required to neutralize 75.0 mL of 0.0300 M HCl?

Answer:

Hope some of these give you impetus to think of other bullet points, sounds good to me.  !!

Explanation:

Answer:

25.88 g of F₂.

Explanation:

From the question given above, the following data were obtained:

Number of molecules of F₂ = 4.10×10²³ molecules

Mass of F₂ =?

From Avogadro's hypothesis,

1 mole of F₂ = 6.02×10²³ molecules

Next, we shall determine the mass of 1 mole of F₂. This can be obtained as follow:

1 mole of F₂ = 2 × 19 = 38 g

Thus,

38 g of F₂ = 6.02×10²³ molecules

Finally, we shall determine the mass of 4.10×10²³ molecules of F₂. This can be obtained as follow:

6.02×10²³ molecules = 38 g of F₂

Therefore,

4.10×10²³ molecules = 4.10×10²³ × 38 / 6.02×10²³

4.10×10²³ molecules = 25.88 g

Thus, 25.88 g of F₂ contains 4.10×10²³ molecules.

Answer: I can help with that!

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Answer:

3.900 km/min

7.677 × 10⁵ ft/h

Explanation:

Step 1: Given data

Speed of the object (s): 6500. cm/s

Step 2: Convert "s" to km/min

We will use the following conversion factors.

6500. cm/s × (1 km/10⁵ cm) × (60 s/1 min) = 3.900 km/min

Step 3: Convert "s" to ft/h

We will use the following conversion factors.

3.900 km/min × (3280.84 ft/1 km) × (60 min/1 h) = 7.677 × 10⁵ ft/h

Answer:

N3F6

Explanation:

Tri- means three so three nitrogens and hexa- means six so six flourines.

Nitrogen and fluorine forms covalent compounds. The formula of one of their compound trinitrogen hexaflouride is N₃F₆.

Covalent compounds are formed by the sharing of electrons between two atoms. Atoms which are electron deficient forms covalent compounds. The number of shared electron is based on the valency of each bonded atom.

Nitrogen is 7th element in periodic table and it have five valence electrons. Thus it needs 3 more electrons to attain stability. Fluorine is 9th element with 7 electrons in its valence shell and it needs one more electron to gain stability.

In the compound trinitrogen hexafluoride, there are three nitrogens and six fluorine. Each nitrogen shares one electron with fluorine and each  fluorine in turn shares its one electron. Thus the formula of the compound is N₃F₆.

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Answer:

Option C

Explanation:

Avogadro number represent discrete unit of a substance which can be atom, molecule, ion etc.

In one mole of H2O there will be 6.02 x 1023 molecules and not atoms.

Molecule of H2O is the discrete unit of water mole and not atom.

Hence, option C is correct choice of answer

Answer:

true

Explanation:

Answer:

carpel

Explanation:

the pollen producing part of a flower, usually with a slender filament supporting the anther.

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Simple digital signals encode information in discrete analog level bands. All levels in a value band indicate the very same information state. The signal throughout most digital circuits can have two correct values; this is known as a binary signal as well as logic signal. Because digital information is frequently encrypted and compressed, digitizing signals is safer.

Therefore, because digital information is frequently encrypted and compressed, digitizing signals is safer.

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Answer:

Follows are the solution to these question:

Explanation:

Given equation:

[tex]N_2+3H_2 \longrightarrow 2NH_3[/tex]

In this equation:

[tex]1 N_2[/tex] gives [tex]= 2NH_3[/tex]

so,

[tex]3N_2[/tex] gives=  [tex]2 \times 3 = 6 NH_3[/tex]

similarly:

[tex]3H_2[/tex] gives [tex]= 2NH_3[/tex]

So, [tex]6H_2[/tex] gives = [tex]\frac{2}{3}\times 6=4NH_3[/tex]

Its limited reagent is =[tex]N_2[/tex]

The amount of [tex]NH_3[/tex] molecules were formed = 4.

and the amount of  [tex]H_2[/tex] excess molecules are= 1

Answer:

0.102 mol

Explanation:

Step 1: Write the balanced equation

PCl₅ + 4 H₂O ⇒ 5 HCl + H₃PO₄

Step 2: Calculate the moles corresponding to 7.36 g of H₂O

The molar mass of H₂O is 18.02 g/mol.

7.36 g × 1 mol/18.02 g = 0.408 mol

Step 3: Calculate the moles of PCl₅ required to react with 0.408 moles of H₂O

The molar ratio of PCl₅ to H₂O is 1:4.

0.408 mol H₂O × 1 mol PCl₅/4 mol H₂O = 0.102 mol PCl₅

Answer:

Option C Removing Na₂CO₃

Option E Heating the container.

Explanation:

The equation for the reaction is given below:

2NaHCO₃ (s) <=> Na₂CO₃ (s) + CO₂ (g) + H₂O (g)

Enthalpy change (ΔH) = 136 KJ

To obtain more CO₂ do the following:

1. Add more NaHCO₃

From chemical equilibrium, adding more NaHCO₃ means the reactant has increase. Thus, it (the reactant) will react to form more product (CO₂)

2. Removing any of the products. Removing any of the products implies that more reactants are in the reaction vessel than the product. Thus, the reactants will react to produce more products (CO₂)

3. Heating the container. Heating the container will lead to an increase in the temperature of the reaction. Since the enthalpy change (ΔH) is positive it means the reaction is endothermic. Thus, heating the container i.e increasing the temperature will favours the forward reaction i.e more products will be obtained.

NOTE: Pressure has no effect in the reaction system since there is no gaseous reactants.

Considering the options given above, C and E gives the correct answer to the question.

Answer: see below

Explanation: filling the blanks in this order

point source

Pollution

Wastewater

waste

Nonpoint source

Contaminants

fertiliser

suburban yards

Answer:

D. B. C. A.

Yours goals for the future are immediately directed by your quality of life although dictated by your lifespan.

Answer:

carbon

Explanation:

Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons. Other chemical processes create calcium carbonate in the water. The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.

Answer:

Natural selection changes how well a species can survive in an environment.

Explanation:

I'm not the best at biology, but natural selection a term we use that's describes nature's way of choosing the strongest to survive. The species with the strongest adaptations will survive while the others will die off. For example, if a school of fish was forced to live in a colder habitat than usual, over many years some fish will adapt to that environment and be able to withstand it. But, some fish won't get those adaptations and be killed off. But, future generations will be born with that ability to withstand the cold environment and it would become normal. So, natural selection changes the way a species lives. Hope this helps

Answer:

According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.

Answer:

Mass of 6.25 moles of copper(II) nitrate = 1025 grams

Explanation:

Let us calculate the molar mass of Copper (II) nitrate

Molecular formula = Ca(NO₃)₂

Atomic mass of Ca = 40 g/mol

Atomic mass of N =14 g/mol

Atomic mass of O = 16 g/mol

molar mass of Ca(NO₃)₂ = 40 + (14 X2) +( 6X16) = 164 g/mol

moles=\frac{mass}{molarmass}moles=

molarmass

mass

therefore

mass = moles X molar mass

mass = 6.25 X 164 = 1025 grams

Answer:

pressure and heat is the correct answer

have a nice day! (^o^)

Answer:

Try this for answer 3082.24

Answer:

i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.

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Actually Welcome to the Concept of the Mass.

The amount actual matter in an object is called as Mass.

hence, D.) is the answer, Mass

Answer:

0.73 mol

Explanation:

No. of moles(n)= Given mass/molar mass.

Given mass=124.7g

Molar mass of Ba(OH)2= Molar mass of (Barium+2Oxygen+2Hydrogen)=137+32+2=171g

No. of moles= 124.7g/171g=0.73 mol