name the chemical compound

I'm not sure if this is the answer but maybe oil.

First, we need to know that calcium oxide is CaO and it decomposes to form Ca and O₂. So the balanced equation is:

2 CaO(s) ---> 2 Ca(s) + O₂(g)

Answer: 2 CaO(s) ---> 2 Ca(s) + O₂(g)

Answer:

sorry

Explanation:

Answer:

PbO2

Lead(IV) oxide/Formula

Explanation:

project

The question is incomplete, the complete question is;

If you were to perform a recrystallization experiment and wanted to form very large crystals of pure substance, what would be the most UNfavorable conditions?

A. Fast cooling solution, use of an anti-solvent, rapidly evaporating solution

B. Slowly cooling solution, slowly evaporating solvent

Answer:

Fast cooling solution, use of an anti-solvent, rapidly evaporating solution

Explanation:

Recrystallization is a process of obtaining pure crystals from solution. The procedure involves dissolving the crystals in a solution in which they are soluble at high temperature but insoluble at low temperature.

As the solution cools, the pure crystals are obtained from the solution.

The solvent to be used must be a slow cooling, slow evaporating solvent so that the crystals can be efficiently recovered from solution.

Answer

pOH=8.036

pH=5.964

The solution is acid

Procedure

We need to consider the following when we speak about pH and pOH

As we have a concentration of [OH-] ions, we will first calculate the pOH

Then we calculate the pH assuming the solution is at 25 C.

We can see that as the pH of this solution is lower than 7, the solution will be acid.

In geologic strontium isotopic analysis by ICP-MS, the use of a collision cell with CH3F helps reduce isobaric interference between 87Rb+ and 87Sr+.

The ability to quantify each element's distinct isotopes makes ICP-MS useful for laboratories looking to compare the ratio of two isotopes of an element or one particular isotope.

Only a few elements cannot be measured by ICP-MS: F and Ne (which cannot be ionized in an argon plasma), Ar, N, and O (which are present at high levels in the plasma and air), and H and He (which are below the mass range of the mass spectrometer).

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We can produce more products by;

A. Increasing the concentration of H₂ gas in the reaction vessel

B. Decreasing the temperature in the reaction vessel

C. Removing the H₂O from the reaction vessel as it forms

Water is created through an exothermic process. Heat energy is released when hydrogen gas (H2) and oxygen gas (O2) mix to make water (H2O). An exothermic reaction is characterized by this energy release.

The reaction's overall energy change is negative, which shows that energy is released. The reaction is exothermic because the extra energy is released as heat into the environment.

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Missing parts;

Water can be made using the reversible reaction shown. Which change would

keep this reaction from shifting to form more of the product?

2H₂+022H₂O + energy

A. Increasing the concentration of H₂ gas in the reaction vessel

B. Decreasing the temperature in the reaction vessel

C. Removing the H₂O from the reaction vessel as it forms

D. Increasing the temperature in the reaction vessel

The amount of heat required to raise the temperature of the 34.2 g sample of aluminum by 34 oC is 1043.52 J.

What is Temperature?

Temperature is a measure of the average kinetic energy of the particles in a substance. It is a physical property that determines the direction of heat flow between two objects or systems in contact with each other. Temperature is measured in degrees Celsius (°C) or Fahrenheit (°F), or in kelvin (K) in the International System of Units (SI).

The amount of heat (q) required to raise the temperature of a substance can be calculated using the formula:

q = m x c x ΔT

Where:

m = mass of the substance (in grams)

c = specific heat of the substance (in J/g oC)

ΔT = change in temperature (in oC)

Plugging in the values given:

m = 34.2 g

c = 0.9 J/g oC

ΔT = 34 oC

q = (34.2 g) x (0.9 J/g oC) x (34 oC)

q = 1043.52 J

Therefore, the amount of heat required to raise the temperature of the 34.2 g sample of aluminum by 34 oC is 1043.52 J.

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5'-GTCCTACGGACGCG-3' is the DNA sequence that matches the data given by shortest fragment on the left to longer fragments on the right.

Chromatography is a laboratory method used in chemical analysis to separate a mixture into its constituents. The combination is dissolved in a fluid solvent known as the mobile phase, which transports it through a system containing a substance known as the stationary phase. A chromatogram is the result of a chromatography run. It is a hardcopy or electronic file comprising the information generated during the chromatography run. Chromatography works on the premise of smearing molecules in a mixture onto a solid or surface, and a stable phase (fluid stationary phase) separates the components of a mixture while working with a mobile phase.

Here,

The DNA sequence 5'-GTCCTACGGACGCG-3' corresponds to the data provided by the smallest fragment on the left to the larger segments on the right.

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Answer:

its sodium hydroxide

Explanation:

Answer:

16.2 g

Explanation:

Step 1: Write the balanced reaction

3 A + 2 B ⇒ 5 C

Step 2: Calculate the moles corresponding to 26.96 g of A

The molar mass of A is 159.7 g/mol.

\(26.96 g \times \frac{1mol}{159.7g} = 0.1688 mol\)

Step 3: Calculate the moles of C produced from 0.1688 moles of A

The molar ratio of A to C is 3:5. The moles of C produced are 5/3 × 0.1688 mol = 0.2813 mol.

Step 4: Calculate the mass corresponding to 0.2813 moles of C

The molar mass of C is 57.6 g/mol.

\(0.2813 mol \times \frac{57.6g}{mol} = 16.2 g\)

the answer will there for be ironic

Answer:

18.4g

Explanation:

Given parameters:

Percentage composition:

49.47%  carbon

5.19% H

28.8% N

16.48% O

Mass of caffeine   = 37.1g

Unknown:

Mass of carbon  = ?

Solution:

To find the mass of the carbon:

  Mass of carbon = percentage composition of carbon x mass of caffeine

 Mass of carbon  = 49.47% x 37.1  = 18.4g

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:

Carbon monoxide + hydrogen ------> methanol

Explanation:

In writing a chemical equation, the substances which react together to form other substances are known as products and are usually placed on the left side of a the equation, whereas the substances that are formed by the reactants are known as products and are usually written on the right side of the equation. A forward pointing arrow is usually placed between the reactants and and products to show how the reaction proceeds from reactants to formation of products.

From the given equation, methanol is the product formed from the reactants carbon monoxide and hydrogen. Therefore, the equation will be:

carbon monoxide + hydrogen -----> methanol

Answer:

C

Explanation:

For my lazy bretheren

The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.

Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.

Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.

It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.

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The pH of the buffer solution would be 7.11.

Phosphoric acid, H3PO4, can donate three protons (H+) in a stepwise manner to form dihydrogen phosphate (H2PO4-) and mono hydrogen phosphate (HPO4^2-) ions. The chemical equation for the reaction is as follows:

H3PO4 + H2O ⇌ H2PO4^- + H3O^+

H2PO4^- + H2O ⇌ HPO4^2- + H3O^+

HPO4^2- + H2O ⇌ PO4^3- + H3O^+

The pKa values for these reactions are 2.15, 7.20, and 12.35, respectively.

To prepare a buffer solution, we need to mix a weak acid and its conjugate base or a weak base and its conjugate acid. In this case, we have a mixture of H3PO4 and KH2PO4, which is a weak acid and its conjugate base, respectively.

The Henderson-Hasselbalch equation for a buffer solution is:

pH = pKa + log([base]/[acid])

where [base] and [acid] are the molar concentrations of the conjugate base and weak acid, respectively.

Using the given values:

[acid] = 0.155 mol / 0.500 L = 0.310 M (molarity of H3PO4)

[base] = 0.250 mol / 0.500 L = 0.500 M (molarity of KH2PO4)

We can calculate the pKa value for the first dissociation of H3PO4 using the given Ka value:

Ka = 10^(-pKa) = 7.52 x 10^(-3)

pKa = -log(Ka) = 2.12

Now, substitute the values into the Henderson-Hasselbalch equation:

pH = 2.12 + log(0.500/0.310)

pH = 7.11

Therefore, the pH of the buffer solution is approximately 7.11.

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Answer:

             Hydrogen Bond

Explanation:

                   Hydrogen bond interactions are formed between the hydrogen atom bonded to most electronegative atoms (i.e. F, O and N) of one molecule and most electronegative atom (i.e. F, O and N) of another molecule.

In this interaction the hydrogen atom has partial positive charge and electronegative atom has partial negative charge.

Answer:

The molecule with two carbon atoms double-bonded to each other and single-bonded to four hydrogen atoms (C2H4). This molecule represents an organic compound because it contains carbon atoms covalently bonded to hydrogen atoms. Organic compounds are characterized by their ability to form covalent bonds with hydrogen atoms and other organic functional groups (such as carbon-carbon double bonds in this case). The other molecules mentioned in the question either have inorganic elements (O, S, N) or do not have any carbon-hydrogen bonds, making them inorganic in nature.

The compound represented by two Carbon atoms double-bonded and single-bonded to Hydrogen is an organic compound. Organic compounds are commonly formed of Carbon bonded to Hydrogen and possibly other elements.

The structure that represents an organic compound is the one with two Carbon (C) atoms double-bonded together, and single bonded above left, above right, below left, and below right to Hydrogen (H). This is because organic compounds are typically composed of Carbon atoms covalently bonded to Hydrogen, and possibly other elements. The other examples described include Oxygen (O) bonded to Hydrogen, which is a compound (water) but not an organic one; Sulfur (S) double bonded to Oxygen and single bonded to two other Oxygen atoms and a Hydrogen atom, likely forming a sulfate ion (not an organic compound); and Nitrogen triple-bonded to Nitrogen which forms N2 (a molecule but not an organic compound).

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Answer:

0.1

tenth

hundredth (0.01)

1.05 (can be anywhere from 1.00 to 1.10)

11.42 (can be anywhere from 11.40 to 11.50)

yes, it falls within reasonable doubt

Some tips to follow when doing lab practical are:

From the table, Column 1 represents the time in half-life cycles, ranging from the initial state to 8 cycles. Column 2 shows the predicted number of radioactive atoms at each time point, based on the assumption that the number of atoms reduces by half in each half-life cycle.

Column 3 represents the simulated number of radioactive atoms at each time point and corresponds to the predicted values of the simulation.

In conclusion, the results as outlined in the lab guide are A=  27 B=  16 C=  9 D=  4 E=  2 F=  2 G=  0 H= 0.

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#complete question:

Do step 3 as outlined in the lab guide. Record your results in the appropriate blanks. A = B = C = D = E = F = G = H = A 3-column table with 9 rows. Column 1 is labeled Time half-life cycles, n with entries Initial, 1, 2, 3, 4, 5, 6, 7, 8. Column 2 is labeled Predicted radioactive atoms with entries 100, 50, 25, 13, 6, 3, 2, 1, 0. Column 3 is labeled Simulated radioactive atoms with entries 100, A, B, C, D, E, F, G, H.

Answer:

Inner core, outer core, mantle, crust

Explanation:

hello ; i don't understand your answer Explanation:

Answer:

\(\huge\boxed{\sf 6x}\)

Explanation:

\(\sf x+ 2x + 3x\\\\Take\ x\ common\\\\x(1+2+3)\\\\x(6)\\\\\bold{6x}\\\\ \rule[225]{225}{2}\)

Hope this helped!

Answer:

Argon-40

the reason this is abundent is because this is a more common isotope

Explanation:

The standard reduction potential of the Cr³+/Cr electrode is -0.46V. None of the option is correct.

To determine the standard reduction potential of the Cr³+/Cr electrode, we can use the Nernst equation, which relates the standard reduction potential to the cell potential under non-standard conditions. The Nernst equation is given by:

E = E° - (0.0592/n) * log(Q)

where E is the cell potential, E° is the standard reduction potential, n is the number of electrons transferred in the half-reaction, and Q is the reaction quotient.

In this case, we have the standard potential of the cell as −0.60V. We know that the standard reduction potential of the Sn/Sn²+ electrode is -0.14V. Therefore, the reduction potential of the Cr³+/Cr electrode can be calculated as:

E = -0.60V - (-0.14V)

E = -0.60V + 0.14V

E = -0.46V

Therefore, the standard reduction potential of the Cr³+/Cr electrode is -0.46V.

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Answer:

Electrolysis is the passing of a direct electric current through an electrolyte producing chemical reactions at the electrodes and decomposition of the materials. The main components required to achieve electrolysis are an electrolyte, electrodes, and an external power source.

Explanation:

Answer:

In chemistry and manufacturing, electrolysis is a technique that uses direct electric current to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell.

hope it helps uh....

I am new here...

thanks ^^

Answer:

2.place value is 70 000 00