25,963 Answered Questions for the topic chemistry

Chemistry

09/18/23

Complete the following table, showing the number of protons, neutrons, and electrons for the two most common isotopes of mercury (200^Hg and 202^Hg) in both the elemental and ion forms.
In this compound, mercury forms an ion with a charge of +2, and sulfur forms an ion with a charge of −2. Complete the following table, showing the number of protons, neutrons, and electrons for the... more
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Chemistry

09/18/23

Complete the following table, showing the number of protons, neutrons, and electrons for the two most common isotopes of mercury (Hg200and Hg202) in both the elemental and ion forms.
In this compound, mercury forms an ion with a charge of +2, and sulfur forms an ion with a charge of −2. Complete the following table, showing the number of protons, neutrons, and electrons for the... more
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Chemistry

09/18/23

What is the average atomic mass of titanium on that planet?
On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance ... more
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Chemistry

09/18/23

Write the complete symbol, including mass number and atomic number, for each atom.
Write the complete symbol, including mass number and atomic number, for each atom. an oxygen atom with 10 neutrons: a chromium atom with a mass number of 54:
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Chemistry

09/17/23

Write the full electron configuration for Cl− . & What is the atomic symbol for the noble gas that also has this electron configuration?
Write the full electron configuration for Cl-.full electron configuration:? What is the atomic symbol for the noble gas that also has this electron configuration?atomic symbol:?
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Chemistry

09/17/23

How many electrons does a Co atom have in its 3𝑑 subshell? & How many of those electrons are unpaired?
How many electrons does a Co atom have in its 3𝑑 subshell?number of electrons: ? 3d electrons How many of those electrons are unpaired?number of unpaired electrons: ? unpaired electrons
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Chemistry

09/17/23

How many subshells are in the 𝑛=3 shell? & How many orbitals are in the 𝑛=3 shell? & What is the maximum number of electrons in the 𝑛=3 shell?
How many subshells are in the 𝑛=3 shell? ? SubshellsHow many orbitals are in the 𝑛=3 shell? ? OrbitalsWhat is the maximum number of electrons in the 𝑛=3 shell? ? Electrons
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Chemistry

09/17/23

How many protons are in an ion with 86 electrons and a −1 charge? & How many total electrons are in a Ni2+ ion?
How many protons are in an ion with 86 electrons and a −1 charge?number of protons:?How many total electrons are in a Ni2+ ion?number of electrons:?
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Chemistry

09/17/23

Determine the overall charge on particles with the subatomic makeups given.
Determine the overall charge on particles with the subatomic makeups given. 13 protons, 14 neutrons, and 10 electrons 8 protons, 10 neutrons, and 8 electrons 15 protons, 18 neutrons,... more
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Chemistry

09/17/23

Write the complete symbol, including mass number and atomic number, for each atom.
Write the complete symbol, including mass number and atomic number, for each... more
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Chemistry

09/17/23

A Se atom has a mass number of 78 . Determine the number of neutrons, protons, and electrons in this neutral isotope.
A Se atom has a mass number of 78. Determine the number of neutrons, protons, and electrons in this neutral isotope.number of neutrons:?
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Chemistry

09/17/23

A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons.
A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons.element symbol:?mass number:?number of protons:?
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Chemistry

09/17/23

A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons.
A neutral isotope has a mass number of 65 and 36 neutrons. Identify the element symbol of this isotope and determine the number of protons and electrons.element symbol:?number of protons:?number of... more
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Chemistry

09/17/23

atom and molecule
An experiment requires that enough C3H8O3 be used to yield 15.5 g of oxygen.How much C3H8O3 must be weighed out
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Chemistry

09/15/23

For the following reaction, 15.8 grams of chlorine gas are allowed to react with 8.99 grams of water.
chlorine (g) + water (l) --- hydrochloric acid (aq) + chloric acid (HClO3)(aq)What is the maximum amount of hydrochloric acid that can be formed?Mass =  gWhat is the FORMULA for the limiting... more
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Chemistry

09/15/23

what order is the reaction
Doubling the concentration of ethane will cause a four-fold increase in the rate of decomposition: C2​H6​→2CH3​ The reaction rate is therefore____ order with respect to the concentration of C2​H6
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Chemistry

09/15/23

Calculate the solubility of nitrogen in water

The solubility of nitrogen in water is 8.21×10-4 mol/L at 0∘C when the nitrogen pressure above the water is 0.790 atm. Calculate the solubility of nitrogen in water when the nitrogen pressure above... more
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Chemistry

09/15/23

Which solvent, water or hexane would you choose to dissolve each of the following?

Which solvent, water or hexane (CH3​(CH2​)4​CH3​), would you choose to dissolve each of the following? a. Cu(NO3​)2​ b. CS2​ c. CH3​CO2​H d. CH3​(CH2​)17​OH e. HCl f. C6​H6​
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Chemistry

09/15/23

For the reaction
For the reaction 2Cl(g)⇌Cl2​(g), the value of the equilibrium constant changes with a change in:  P CI​  container volume  temperature  P CI2 all of these
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Chemistry

09/15/23

Which of the following will increase the pressure of CH4​ ?

Coal, which is primarily carbon, can be converted to natural gas, primarily CH4​, by the following exothermic reaction: C(s)+2H2​(g)⇌CH4​(g) Which of the following will increase the pressure... more
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Chemistry

09/15/23

Is the reaction at equilibrium?

Nitrogen dioxide dimerizes according to the following reaction: 2NO2​(g)⇌N2​O44(g) Kp​ = 6.7 at 298 Kelvin  A 2.25 - L container initially contains 0.055 mol of NO2​ and 0.082 mol of N2​O4​ at 298... more
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Chemistry

09/15/23

Consider the following reactions and their respective equilibrium constants. 
Consider the following reactions and their respective equilibrium constants. NO(g)+1/2Br2​(g)⇌NOBr(g) Kp​ = 5.32NO(g)⇌N2​(g)+O2​(g) Kp​ = 2.1×1030​ Use these reactions to calculate the equilibrium... more
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Chemistry

09/15/23

At a particular temperature
At a particular temperature, K=6.5×102 for the reaction 2NO(g)+2H2​(g)⇌N2​(g)+2H2​O(g) Calculate K for each of the following reactions.... more
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Chemistry

09/15/23

4.Consider the following solutions: 
Consider the following solutions: 0.010m Na3​PO4​(aq) 0.020m CaBr2​(aq) 0.020m KCl(aq) 0.020m HF(aq) (HF is a weak acid.) a. Which solution(s) would have the same boiling point as 0.040m... more
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Chemistry

09/14/23

When calcium hydroxide reacts with hydrochloric acid, calcium chloride and water are produced. The balanced equation for this reaction is:
Ca (OH)2 (aq) + 2HCI(aq) —-> CaCl2 (aq) + 2H2O(l)If 6 moles of hydrochloric acid react, The reaction consumes____moles of calcium hydroxide The reaction produces____ moles of calcium chloride... more
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