When a hydrogen atom is added to a polyatomic ion, the amount of negative charge . Following this pattern, we can see that hydrogen carbonate has a charge of and hydrogen sulfate has a charge of .

1.461 grams of NaCl must be dissolved in 1 liter solution to make 25 mM of NaCl solution according to molar concentration.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Millimolar concentration is also calculated by the same formula just the difference in units is present. According to the data given and substitution in the formula,

mass= 25×58.44×1=1461 mg or 1.461 g

Thus, 1.461 g of sodium chloride is required to make 25 mM  solution.

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840 moles of chlorine in 12 moles.

What in chemistry is a mole?

The unit of measurement used by chemists known as a mole is very significant. Similar to how having a dozen eggs says you have twelve eggs, having a mole of something indicates that you have 602,214,076,000,000,000,000,000 of that particular thing.

                               When measuring very small objects like atoms, molecules, or other particles, chemists must use moles. 6.02214 x 1023 particles make up a mole, which is equal to (10) of material. 6.02214 1023 particles make up one mole.

1 mole of chlorine weighs 70 grams.

    12.00 moles of chlorine = 12 * 70

                                            = 840

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The complete question is -

How many grams are in 12.00 moles of chlorine (gas)?

Answer:

they're

Explanation:

solid, liquid and gas

Answer:

Explanation: Butane can be converted to 2-butano through a process called isomerization. Isomerization is a chemical reaction in which a compound is converted into one of its structural isomers, which are molecules with the same chemical formula but different arrangement of atoms.

To convert butane to 2-butano, one common approach is to use a catalyst such as a metal or metal oxide to facilitate the rearrangement of the atoms in the molecule. This process typically involves heating the butane to a high temperature (around 200-300°C) in the presence of the catalyst, which promotes the isomerization reaction. Other conditions such as pressure and the presence of a solvent may also be used to control the reaction.

It's important to note that this process typically has a low yield, meaning that only a small fraction of the starting butane is converted to 2-butano. As a result, additional purification steps may be needed to separate the 2-butano from the other products of the reaction.

There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.

The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.

Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:

Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)

Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2

Moles of Al3+ = 0.84 mol Al3+

Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.

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Explanation:

As I think Option C is correct i.e. NH4+.

The claim that can be supported is that the channels in mars are made by the flow of lave and not by water. Thus, claim  2 is supportive.

According to the new studies of the surface features of mars there are some channels found through the plates of mars. At least one of the meandering channels on the surface of Mars can possibly be explained by the fact that flowing lava can create or carve patterns that resemble the riverbeds and canyons cut by water.

NASA delivered this talk on these findings on March 4, 2010, at the 41st Lunar and Planetary Science Conference at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

The possibility of discovering life on Mars is supposed to be affected by the question of whether the channels on Mars were produced by lava or by water.

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Answer:

586.846 lbs

Explanation:

the molar mass of HCl is 1 + 35.45 = 36.45

this means you can do 16.1 lbmol * 36.45 lb/lbmol = 586.845

The type of compound represented by the graph at right is a strong acid (option B).

An acid is generally any compound capable of dissociating into its respective constituent ions when in an aqueous solution.

An acid is categorised as strong or weak depending on whether it can dissociate completely or partially. A strong acid dissociates completely in water.

According to this question, HA, when added to water, dissociates into H+ and A- ions, hence, is a strong acid.

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Answer:

its outermost shell is completely full making it extremely stable.

Explanation:

It only has two electrons in its outer shell so its valence electron configuration is 1s2. Even though it only has two electrons, it is grouped with elements that have eight valence electrons. Helium is still happy because its outermost shell is completely full making it extremely stable.

Answer:

4.5 multiplied by 10, to the -10th power.

\((4.5 \times 10 { - }^{10} )\)

The rate law and the rate law constant for the following reaction: bro3 5br 6h -> 3br2 3h2o is 1.5 × 10-3 M/S.

This means that the molecularity and order of the reaction with regard to [Br] are 5 and 1, respectively. The rate of bromine emergence is related to the rate of bromide ion evaporation in the reaction "BrO 3(-)(aq) + 5Br(-) + 6H(+) rarr 3Br 2 + 3H 2O." The reaction rate for the reaction A->B is increased by 8 times when the concentration of both reactants is doubled, while the reaction rate is only doubled when the concentration of B is doubled. If there are solely saturated chemicals present, it turns reddish-brown. By gradually adding bromine solution until the first reddish-brown hue appears, you may gauge how unsaturated a compound is. The unsaturation increases as more bromine solution is needed.

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carbon is an elements ,The compounds of carbon are called an organic compounds.

Carbon have tendency to catenation. catenation means forming bond with another carbon atom and form a long chain of carbon. This is the reason for the presence variety of number of organic compounds. The atomic size of carbon is small and have the valency of four, forms covalent bond. Carbon is strong and stable. Generally carbon containing compound are organic compounds. Generally all the Organic compounds contain carbon and hydrogen  called as hydrocarbon.

Thus, carbon is an elements ,The compounds of carbon are called an organic compounds.

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Answer:

How do amoeba respire.

how do plants respire.

Answer:

Please mark brainlist

Explanation:

The equilibrium expression for this reaction is Kw = [H₃O⁺][OH⁻], where Kw is the autoionization constant for water. At 25°C, the value of Kw is 1.0 x 10⁻¹⁴.

Based on the bond energies given, the standard enthalpy of the reaction, ΔH°(rxn) is -296 kJ.

The standard enthalpy change of a reaction is the energy changes involved when substances react under standard conditions to form products.

The standard enthalpy of the reaction, ΔH°(rxn) is calculated as follows:

Sum of energy of bonds broken = 839 + (2 × 413) + (432 × 2) = 2529 kJ

Sum of energy of bonds formed = 347 + (6 × 413) = 2825 kJ

ΔH°(rxn) = (2529 - 2825) kJ

ΔH°(rxn) = -296 kJ

Therefore, the standard enthalpy of the reaction, ΔH°(rxn) is -296 kJ.

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Answer:

Combustion of propanone I believe

Explanation:

Answer:

1.E25 it is the answer the answer to mass of 1×10^25 molecules of water​

Explanation:

this is just EXPLINATION find your answer using this

first divide the number of molecules by Avogadro's number 6.022*10^25

you will

l get no. of Moles of water

multiply the no. of Moles with mass of 1 Mole of water 18g per mole

if get answer you comment

you should try on your own you will understand better

Answer:

95.8

Explanation:

The number comes out to be 95.816, but you round multiplcation to the lowest significant figure present in the problem. 16.52 has 4 sig figs, and 5.8 has 2 sig figs. Thus, your answer ends up being two significant figures.

Answer: 96

Explanation:

The species that are responsible for the peaks near the wavelength are allura red and tartrazine.

It should be noted that wavelength simply means the distance between the identical points in the adjacent cycles of a waveform.

In this case, the chemical species is responsible for the peaks near each wavelengths include allura red and tartrazine.

It should be noted that allura red is used as a food dye and supplied as red sodium salt. Also, tartrazine is used as a food coloring agent.

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kAnswer:

Explanation:

Answer:

Correct option is

C

Ag

2

CO

3

; K

sp

=6.2×10

−12

(A) For CaCO

3

,S=

Ksp

=

8.7×10

−9

=9.3×10

−5

M

(B) For CuS,S=

Ksp

=

8.5×10

−45

=9.2×10

−23

M

(C) For Ag

2

CO

3

,S=(Ksp/4)

1/3

=(6.2×10

−12

/4)

1/3

=1.15×10

−4

M

(D) For Pb(IO

3

)

2

,S=(Ksp/4)

1/3

=(2.6×10

−13

/4)

1/3

=4×10

−5

M

Hence, Ag

2

CO

3

has the greatest molar solubility in pure water.

I'm pretty sure it's 1.5 mph, but i'm not 100% sure

Answer:

0.5 m/s

Explanation:

x = 50 m

t = 100 s

v = x / t

v = 50 / 100

v = 0.5 m/s

Answer:

⇒ (400·3) / 294 = (P2·1) / 277

P2 = 1130.6 kPa

Explanation:

The representation of carbons and hydrogens on the structure is shown on the attached image.

The structure given is 3-Methylhexane. 3-Methylhexane is a branched-chain alkane with the molecular formula \(C_{7} H_{16}\). It is also known as 2,3-dimethylbutane or isoheptane.

The molecule consists of a six-carbon chain with a methyl group (-CH3) attached to the third carbon atom from one end, and another methyl group attached to the second carbon atom from the same end, giving it a branched structure.

3-Methylhexane is a colorless liquid with a boiling point of 90-91°C and a density of 0.68 g/cm3. It is commonly used as a reference compound in gas chromatography and as a blending component in gasoline to improve octane rating.

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

Nobelium or Beryllium