Predict the products when aqueous solutions of sodium carbonate and calcium chloride are combined.
A)
SC(aq). CaCN)
B)
NaCl(aq), CaC)
C)
NaCl(aq), CaCO3(s)
D)
Na2CO3(aq). CaCl2(aq)
Answers
Related Questions
Given the mass number and atomic number,
how are the number of electrons, protons,
and neutrons in an atom calculated?
Answers
a. What chemicals are used in the biogas plant process?
b. Is there any dangerous waste being discharged to the environment? If yes list them.
Answers
The biogas produced by anaerobic fragmentation has the most content of methane, CO₂, H₂S, and water.
What is biogas?Biogas can be described as a mixture of gases consisting of methane, carbon dioxide, and hydrogen sulfide, formed from raw materials such as agricultural waste, municipal waste, sewage, plant material, green waste, and food waste. Biogas can be described as a renewable energy source.
Biogas can be produced by anaerobic digestion with anaerobic organisms inside an anaerobic digester, bioreactor, or biodigester. Biogas is methane, carbon dioxide, and may have little amounts of hydrogen sulfide, moisture, and siloxanes.
The gases methane and carbon monoxide can be combusted or oxidized with oxygen. This energy release permits biogas to be used as fuel, for any heating purpose, such as cooking. Biogas can be used in a gas engine to transform the energy in the gas into electricity and heat.
In some cases, biogas consists siloxanes. Hydrogen sulfide is corrosive in the biogas stream.
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______________Helps the earth continue to go around the sun
Gravity
Entropy
Magnetism
Inertia
Friction
Answers
What do Cl-35 and Cl-36 have in common?
Answers
Answer:
they have same atomic number as they are the same element & electrons
Answer: they both have the atomic (proton number) as they are the same element hence they also they have the same number of electrons. Therefore they have similar chemical properties, as the electrons determine the chemical property of an element.
Explanation: The numbers 35 and 37 are the mass numbers for the two isotopes of chlorine. They both have the same atomic number (proton number ) as they are the same
Isotopes have the same number of protons, but a different mass.
True
False
Answers
Answer:
True
Explanation:
they have the same number of protons but different number of neutrons which results in a different mass
I would greatly appreciate if you can give this the brainliest answer crown!
Mario tudied how far room temperature water would purt out of a platic milk carton when 3mm hole were punched at different height from the bottom of the container
Answers
The independent variable here is the distance water traveled out of the carton.
The factors of the subject or the things that have an impact on the experiment are known as the variables of an experiment. Three different sorts of variables exist. These variables are control, independent, and dependent.
Independent variables are ones that are not under the experimenter's direct control. The experimenter can alter or regulate the dependent variables. Control variables are those that don't change or are constrained during the experiment.
The carbon's journey distance is the dependent variable in this situation when Mario studied how far room temperature water would spurt out of a plastic milk carton when 3mm holes were punched at different heights from the bottom of the container.
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If a sample of N2 gas has an initial pressure of 500 Torr and volume of 0.5 L, what will the final volume be if the pressure is increased to 700 Torr?
Answers
Answer:
V₂ = 0.4 L
Explanation:
Data:
P₁ (initial pressure) = 500 torrV₁ (initial volume) = 0.5 LP₂ (final pressure) = 700 torrWanted:
V₂ (final volume)Equation:
P₁V₁ = P₂V₂ → V₂ = P₁V₁ / P₂Solution:
V₂ = \(\frac{(500 torr)(0.5 L)}{700 torr}\) = 0.3571 L or 0.4 LWhat is the act of adding fluid such as distilled water to a powdered or crystaline form?
Answers
Reconstitution is the act of adding fluid such as distilled water to a powdered or crystalline form.
Additionally, medications are frequently provided in dry form, such as powders or crystals, which must be reconstituted with liquid before being injected parenterally. To create a specified liquid concentration, a dry ingredient is reconstituted by adding a liquid diluent. To ensure that the drug is reconstituted in the exact concentration, it is crucial to carefully follow the reconstitution instructions. The quantity of fluid used to dilute the drug must also be taken into account when determining the dosage of reconstituted medication to provide to the patient.
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Calculate either [H30), (OH), or pH for each of the following solutions at 25°C. a. Solution B: [H30*] = 9.87x10-M; [OH ) = (molar) b. Solution C: [HCl) = 0.123 M; PH= c. Solution D: pH = 2.1; [OH-] = (molar)
Answers
a. Solution B: [H₃O⁺] = 9.87x10⁻⁹ M; [OH⁻] = (molar)
b. Solution C: [HCl] = 0.123 M; pH =
c. Solution D: pH = 2.1; [OH⁻] = (molar)
a. In Solution B, the concentration of hydronium ions ([H₃O⁺]) is given as 9.87x10⁻⁹ M. This indicates the acidity of the solution. The concentration of hydroxide ions ([OH⁻]) is not provided.
b. In Solution C, the concentration of hydrochloric acid ([HCl]) is given as 0.123 M. To determine the pH, we need to calculate the negative logarithm of the hydronium ion concentration. pH = -log[H₃O⁺].
c. In Solution D, the pH is given as 2.1. This indicates the acidity of the solution. The concentration of hydroxide ions ([OH⁻]) is not provided.
To calculate the concentration of hydroxide ions ([OH⁻]) or determine the pH for each solution, more information is needed. Without the complete data, it is not possible to provide precise calculations or specific answers.
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a 30-n net force on a skater produces an acceleration of 0.6 m/s2. what is the mass of the skater
Answers
Answer:
The answer is 50 kgExplanation:
The mass of the skater can be found by using the formula
\(m = \frac{f}{a} \\ \)
f is the force
a is the acceleration
From the question we have
\(m = \frac{30}{0.6} \\ \)
We have the final answer as
50 kgHope this helps you
Carbon cycle – What are the main reservoirs
of the carbon cycle? Where do the inorganic and organic carbon
cycles interact? What are the major differences and similarities
between the inorganic and organic carbon?
Answers
The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.
The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.
Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.
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WILL MARK BRAINLIEST IF CORRECT
Match each group with the type of ion it will form.
Answers
Answer:
3A: c
7A: d
1A: b
6A: f
2A: e
5A: a
Explanation:
3A: needs to -3 electrons to be stable, so +3 charge
7A: needs to +1 electrons to be stable, so -1 charge
1A: needs to -1 electrons to be stable, so +1 charge
6A: needs to +2 electrons to be stable, so -2 charge
2A: needs to -2 electrons to be stable, so +2 charge
5A: needs to +3 electrons to be stable, so -3 charge
ALL 8A ELEMENTS ARE STABLE, THEY HAVE THEIR VALENCE SHELL FULLY FILLED
The type of ion it will form is; 1) 3A needs +3 ions: Option C 2) 7A needs -1 charge: Option D 3) 1A needs +1 charge: Option B 4) 6A needs -2 charge: Option F 5) 2A needs +2 charge: Option E 6) 5A needs -3 charge: Option A.
The ion formation for each group based on their electron configurations and valence electrons.
3A (Group 13): Elements in Group 3A of the periodic table have three valence electrons. To achieve a stable electron configuration, they tend to lose three electrons to attain a full valence shell. Losing electrons results in a net positive charge, specifically a +3 charge.
7A (Group 17): Elements in Group 7A, also known as the halogens, have seven valence electrons. They tend to gain one electron to achieve a full valence shell, leading to a net negative charge of -1.
1A (Group 1): Elements in Group 1A, or the alkali metals, have one valence electron. They have a strong tendency to lose this one electron to achieve a full valence shell, resulting in a net positive charge of +1.
6A (Group 16): Elements in Group 6A have six valence electrons. They tend to gain two electrons to achieve a full valence shell, resulting in a net negative charge of -2.
2A (Group 2): Elements in Group 2A, known as the alkaline earth metals, have two valence electrons. They tend to lose these two electrons to achieve a full valence shell, resulting in a net positive charge of +2.
5A (Group 15): Elements in Group 5A have five valence electrons. They tend to gain three electrons to achieve a full valence shell, leading to a net negative charge of -3.
Therefore, the charges of the ions formed by each group are determined by their tendency to gain or lose electrons to achieve a full valence shell, following the octet rule.
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PLEASE HELP AND THANKS
Answers
Answer:
torque =force*distance
16. What part of the atom does radioactivity involve?
O Outer energy shells
Nucleus
O Entire atom
Inner energy shells
Answers
Answer:
inner energy shells are involved in radioactive activity
Answer: I think its NUCLEUS
Explanation: Good luck yall
How much energy is released when a peanut is burned in a calorimeter? The temperature of 1.00Kg of water rose from 22.6°C to
26.5°C. The specific heat of water is 4.184J/g °C.
Answers
Scientists often have to deal with numbers that are either very large or very small. For example, the radius of the Sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. Express each number in an alternate form.
Answers
Answer:
The radius of the Sun is 6.96 x 10⁵ km
Each bacterial cell is 0.00019 mm wide.
what type of chemical is manganese(IV) oxide
Answers
Answer:
catalyst
Explanation:
it alters the speed of reaction
car travels 67 miles at a speed of 45 mi/hr. How long did it take?
Answers
Answer:
Speed = Distance/time
Let's take 't' to be the time
45 = 67/t
45t = 67
t = 67/45
t = 1.48
4x
In solution, an electrolyte produces
A ions
B
A(n)
more solute.
A
B
energy
A
B
saturated
solution can dissolve
unsaturated
A(n)
x maximum amount of solute.
solution has dissolved the
saturated
unsaturated
A(n)
solution, when heated
4x and cooled slowly, will have more solute
dissolved at a particular temperature than
should be.
Answers
To solve this, we must know each and every concept that is related to electrolytic solution. Therefore, In solution, an electrolyte produces ions. The correct option is option A.
What is electrolyte?In chemistry and physics, an electrolyte is a substance that conducts electric current by separating into positively and negatively charged particles known as ions, which migrate toward and are normally released at the negative and positive terminals.
Acids, bases, and salts are the most common electrolytes, which ionize when saturated in solvents such as water or alcohol. An electrolyte readily dissociates into ions in solution.
Therefore, in solution, an electrolyte produces ions. The correct option is option A.
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According to the following reaction, how many moles of mercury(II) oxide are necessary to form 0.896 moles oxygen gas? mercury(II) oxide (s) mercury (l) + oxygen (g) ___?___moles mercury(II) oxide
Answers
We require 0.896 moles of HgO to produce 0.896 moles of O2.
The balanced chemical equation for the given reaction is;HgO(s) → Hg(l) + O2(g)We can calculate the number of moles of HgO(s) required to produce 0.896 moles of O2(g) using stoichiometry.To use stoichiometry we need to know the mole ratio of O2 to HgO in the above reaction.Based on the balanced chemical equation, the ratio of HgO to O2 is 1:1.This means that 1 mole of HgO will produce 1 mole of O2.Therefore, the number of moles of HgO required to produce 0.896 moles of O2 is also 0.896 moles.150 words explanation:To calculate the number of moles of HgO required to produce 0.896 moles of O2 we can use the mole ratio of the two compounds in the balanced chemical equation.HgO(s) → Hg(l) + O2(g)From the equation, the ratio of HgO to O2 is 1:1. This means that 1 mole of HgO will produce 1 mole of O2.If we have 0.896 moles of O2, we will require the same number of moles of HgO to produce the O2. Therefore, we require 0.896 moles of HgO to produce 0.896 moles of O2.
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synthesize (z)−hept−5−en−2−one from ethyl acetoacetate (ch3coch2co2et) and the given starting material.
Answers
To synthesize (Z)-hept-5-en-2-one from ethyl acetoacetate, perform a Claisen condensation by deprotonating ethyl acetoacetate with NaOEt to form the enolate ion. Then, conduct an intramolecular condensation and perform acid workup to obtain (Z)-hept-5-en-2-one.
To synthesize (Z)-hept-5-en-2-one from ethyl acetoacetate (CH3COCH2CO2Et) and the given starting material, you can follow the Claisen condensation reaction. Here are the step-by-step instructions:
Step 1: Deprotonation
Start by deprotonating the ethyl acetoacetate using a strong base like sodium ethoxide (NaOEt):
CH3COCH2CO2Et + NaOEt → CH3COCH2CO2^- Na+ + EtOH
Step 2: Formation of Enolate Ion
The deprotonated ethyl acetoacetate (enolate ion) will undergo an intramolecular condensation by reacting with the carbonyl group:
CH3COCH2CO2^- Na+ → CH3COCH=C(OH)-CO2^- Na+
Step 3: Acid Workup
After the formation of the enolate ion, perform acid workup to convert the intermediate into the desired product. The acidic conditions typically involve the addition of dilute hydrochloric acid (HCl) or sulfuric acid (H2SO4). This step will result in the loss of the hydroxyl group as water, leading to the formation of (Z)-hept-5-en-2-one:
CH3COCH=C(OH)-CO2^- Na+ + HCl → CH3COCH=CH-CO2Na + H2O
Finally, the sodium salt formed can be neutralized by adding an aqueous acidic solution to obtain (Z)-hept-5-en-2-one in its free form.
Please note that the stereochemistry (Z) mentioned in the product name refers to the double bond configuration, specifically cis-configuration. The (E)-isomer would have a trans-configuration.
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initially, your lungs contain 2.3 l of air at 1.05 atm. if you expand your lungs to 2.6 l, what is the new pressure inside your lungs?
Answers
If you expand your lungs to 2.6 l, the new pressure inside your lungs is 0.9346 atm.
The new pressure inside your lungs can be determined by using the Boyle's Law equation: P₁V₁ = P₂V₂. This equation relates the initial pressure and volume of a gas to the final pressure and volume of the same gas.
In this case, the initial pressure (P₁) is 1.05 atm, the initial volume (V₁) is 2.3 L, and the final volume (V₂) is 2.6 L. We need to find the final pressure (P₂).
Plugging in the given values into the equation:
P₁V₁ = P₂V₂
(1.05 atm)(2.3 L) = P2(2.6 L)
Dividing both sides by 2.6 L to isolate P₂:
P₂ = (1.05 atm)(2.3 L) / (2.6 L)
P₂ = 0.9346 atm
Therefore, the new pressure inside your lungs is 0.9346 atm.
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pH = 10.88
what is the OH-
Answers
Answer:
The pH of a solution is defined as the negative logarithm (base 10) of the concentration of hydrogen ions [H+]. The concentration of hydroxide ions [OH-] can be calculated using the equation Kw = [H+][OH-], where Kw is the ion product constant for water, which is equal to 1.0 × 10^-14 at 25°C.
To find the [OH-] of a solution with pH 10.88, we first find the [H+]:
pH = -log[H+]
10.88 = -log[H+]
[H+] = 10^(-10.88) = 1.4 × 10^(-11) M
Now we can calculate the [OH-]:
Kw = [H+][OH-]
1.0 × 10^-14 = (1.4 × 10^-11)[OH-]
[OH-] = (1.0 × 10^-14) / (1.4 × 10^-11) = 7.1 × 10^-4 M
Therefore, the [OH-] of the solution is 7.1 × 10^-4 M.
Explanation:
if only 0.212 g of ca(oh)2 dissolves in enough water to give 0.113 l of aqueous solution at a given temperature, what is the ksp value for calcium hydroxide at this temperature?
Answers
If only 0.212 g of ca(oh)2 dissolves in enough water to give 0.113 l of aqueous solution at a given temperature, the ksp value for calcium hydroxide at this temperature is 0.00504 .
What is solution ?
Solution is an answer to a problem, an approach to solving an issue, or a means of dealing with a difficulty. It is often a process, a product or a course of action that is created to resolve an issue or to take advantage of an opportunity. Solutions can be found through the use of problem-solving techniques, brainstorming, critical thinking, and research. Solutions can be applied to a wide range of issues, from personal problems to business challenges.
Ksp (solubility product constant) is a measure of the equilibrium between an ionic solid and its ions in aqueous solution. It is calculated by multiplying the concentration of each ion present in the solution, raised to the power of its respective coefficient in the balanced reaction equation.In this case, the balanced reaction equation for the dissolution of calcium hydroxide in water is: \(Ca(OH)^2\) (s)⇄\(Ca_2\)+ (aq) + 2OH– (aq)
Therefore, the Ksp value is calculated as follows: Ksp =\([Ca^2+] [OH–]^2 = (0.212 g/L) (2* 0.113 L)2 = 0.00504\)
This value is the Ksp for calcium hydroxide at the given temperature.
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The haber process can be used to produce ammonia (nh3) from hydrogen gas (h2) and nitrogen gas (n2). the balanced equation for this process is shown below. 3h2 n2 right arrow. 2nh3 the molar mass of nh3 is 17.03 g/mol. the molar mass of h2 is 2.0158 g/mol. in a particular reaction, 0.575 g of nh3 forms. what is the mass, in grams, of h2 that must have reacted, to the correct number of significant figures? 0.1 grams 0.102 grams 0.10209 grams 0.1021 grams
Answers
The mass of hydrogen reacted with nitrogen to give ammonia is 0.1 grams.
How we calculate the mass from moles?
Mass of any substance will be calculated by using the moles as:
n = W/M, where
W = required mass
M = molar mass
Given chemical reaction is:
3H₂ + N₂ → 2NH₃
Moles of 0.575 g of NH₃ will be calculated as:
n = 0.575g / 17.03g/mol = 0.033 moles
From the stoichiometry of the reaction, it is clear that:
2 moles of NH₃ = produced by 3 moles of H₂
0.033 moles of NH₃ = produced by 3/2×0.033=0.0495 moles of H₂
Now we calculate the mass of hydrogen from the given moles and molar mass as:
W = (0.0495mol)(2.0158g/mol) = 0.09 grams = 0.10 grams
Hence, option (a) is correct i.e. 0.1 grams.
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Which term means finding ways to describe and explain the natural world
through observations and experiments?
A. Pseudoscience
B. Philosophy
C. Chemistry
D. Science
Answers
Answer:
D. Science i think
Explanation:
Could someone help me answer these questions with the answer and typed steps for how each answer was found? I asked this question previously but, I could not read the handwritten answer.
7. A 25 g soil sample was extracted with 75 mL of NH4OAc (pH 7.0), and the filtrate was analyzed
on an atomic absorption unit. The following results were obtained:
100 mg/L Ca2+, 45 mg/L Mg2+, 85.5 mg/L K+, 94.2 mg/L Al3+ and 8.0 mg/L H+.
a. What is the CEC in cmol(+)/kg for this sample?
b. What is the % B.S. for this soil?
c. What is the % acid saturation for this soil sample?
Answers
The CEC for this soil sample is 675.2 cmol(+)/kg.
The % Base Saturation for this soil sample is approximately 136.62%.
The % Acid Saturation for this soil sample is approximately 60.55%.
To calculate the CEC, % Base Saturation (B.S.), and % Acid Saturation for the given soil sample:
a. Calculation of CEC (Cation Exchange Capacity):
CEC is the sum of exchangeable cations in the soil. From the given results, we have:
CEC = Ca2+ + Mg2+ + K+ + Al3+
CEC = (100 mg/L + 45 mg/L + 85.5 mg/L + 94.2 mg/L) / (25 g / 1000)
CEC = 168.7 mg / (25 g / 1000)
CEC = 675.2 cmol(+)/kg
b. Calculation of % Base Saturation (B.S.):
% B.S. represents the percentage of CEC occupied by base cations. In this case, we consider Ca2+, Mg2+, and K+ as base cations. The formula to calculate % B.S. is:
% B.S. = (Ca2+ + Mg2+ + K+) / CEC * 100
% B.S. = (100 mg/L + 45 mg/L + 85.5 mg/L) / (168.7 cmol(+)/kg) * 100
% B.S. = 230.5 mg / (168.7 cmol(+)/kg) * 100
% B.S. = 136.62%
c. Calculation of % Acid Saturation:
% Acid Saturation represents the percentage of CEC occupied by acid cations, in this case, H+ and Al3+. The formula to calculate % Acid Saturation is:
% Acid Saturation = (H+ + Al3+) / CEC * 100
% Acid Saturation = (8.0 mg/L + 94.2 mg/L) / (168.7 cmol(+)/kg) * 100
% Acid Saturation = 102.2 mg / (168.7 cmol(+)/kg) * 100
% Acid Saturation = 60.55%
Please note that the given values were in milligrams per liter (mg/L), and the CEC and % Saturation values were calculated assuming a conversion from mg/L to cmol(+)/kg using the mass of the soil sample (25 g).
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I can’t figure out if I’m doing this right or not
Answers
A structural isomer is a compound that has the same number of atoms but is arranged differently. Therefore, to know which will be the structural isomer of the compound they give us, we must count the atoms of each compound.
When comparing the compounds we see that pent-2-yne has C5H8 just like 3-methylcyclobutene, therefore these two compounds are structural isomers.
The answer will be: 3-methylcyclobutene
The oxidation of so2 to so3 is accelerated by no2. The reaction proceeds according to:no2(g)+so2(g)⟶no(g)+so3(g)2no(g)+o2(g)⟶2no2(g)part ashow that, with appropriate coefficients, the two reactions can be summed to give the overall oxidation of so2 by o2 to give so3. Express your answer as a chemical equation. Identify all of the phases in your answer
Answers
The overall reaction for the oxidation of SO2 by O2 to give SO3 is:
SO2(g) + O2(g) ⟶ 2SO3(g)
The two given reactions are:
NO2(g) + SO2(g) ⟶ NO(g) + SO3(g)
2NO(g) + O2(g) ⟶ 2NO2(g)
Adding these reactions, we get:
NO2(g) + SO2(g) ⟶ NO(g) + SO3(g)
2NO(g) + O2(g) ⟶ 2NO2(g)
2NO2(g) + SO2(g) + O2(g) ⟶ 2NO(g) + 2SO3(g)
Therefore, the overall reaction for the oxidation of SO2 by O2 to give SO3 is:
SO2(g) + O2(g) ⟶ 2SO3(g)
where the catalyst NO2 is not explicitly shown. All the reactants and products are in the gas phase.
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high-energy matter consisting of positively and negatively charged particles
Answers
High-energy matter consisting of positively and negatively charged particles is Plasma.
Plasma is high - energy matter consist of positively particles and negatively charged particles. This is the most common state of matter that is plasma state. Matter consisting negatively charged particles and positively charged particles and overall charge is neutral . Particles have high energy that when collide, electrons knocked loose from atom and forming positive ion and negative ion. particles are moving very fast in plasma state. Examples of plasma are stars, neon tubes , lightening bolts, fluorescent lights, fire.
Thus, High-energy matter consisting of positively and negatively charged particles is Plasma.
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