ethyne gas is passed into ammonical silver nitrate solution?​

Answer:

1. Barium Acetate.

2. Formula: Ba(C2H3O2)2.

3. Molar Mass: 255.415.

Explanation:

139 g Cu

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 2.18 mol Cu

[Solve] grams Cu

Step 2: Identify Conversion

[PT] Molar Mass of Cu - 63.55 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

138.539 g Cu ≈ 139 g Cu

Explanation:

If we compare its solubility products without any calculation then, Magnesium hydroxide is more soluble than compound A and C. Magnesium hydroxide is less soluble than compound D.

- The solubility product of magnesium hydroxide and zinc carbonate is same so it is not possible to determine whether it is more or less soluble than compound B

Answer:

Without the process of cell differentiation, multicellular organisms would not be possible.

1.1 mol Ne

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 6.5 × 10²³ atoms Ne

[Solve] moles Ne

Step 2: Identify Conversion

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

1.07938 mol Ne ≈ 1.1 mol Ne

Answer: The answer is both diseases and availability of resources can limit the growth of a population of organisms which is A

Explanation:

Answer:

3.34 M

Explanation:

Step 1: Given data

Step 2: Calculate the moles of acetic acid

The molar mass of acetic acid is 60.05 g/mol.

100 g × 1 mol/60.05 g = 1.67 mol

Step 3: Calculate the molarity of acetic acid

The molarity is equal to the moles of solute divided by the liters of solution.

M = n/V

M = 1.67 mol/0.5000 L = 3.34 M

Answer:

1. Causes air to vibrate 2. A hydroelectric dam generating electricity on a river

Answer:

what are you asking

Explanation:

The gas laws are Boyle's law, Charles law, ideal gas law, and Gay-Lussac law.

The first law is Boyle's law that states that at constant temperature, the pressure varies with volume of the gas.

The second law is Charles's law that states that at constant pressure, the volume of the gas is directly proportional to the temperature of the gas.

Above, both laws form the ideal gas law. PV = nRT.

Thus, the gas laws are Boyle's law, Charles law, ideal gas law, and Gay-Lussac law.

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Answer:

Radio waves are able to penetate the earth's atmosphere due to their low frequency and long wavelength.

Let me know if this helps!

Answer:

Electrical energy

Explanation:

The wind Mill is an example of a device that converts wind energy into electrical energy

Hi there!

[tex]\large\boxed{4.04g}[/tex]

To solve, we can use dimensional analysis to convert from molecules to grams.

We must use Avogadro's number (6.02 × 10²³) in converting from molecules to moles.

After converting, multiply by the atomic mass, or grams per mole.

[tex]1.204 * 10^{24} moles *\frac{1 mol}{6.02*10^{23}moles}* \frac{2.02g}{1mol }= 4.04g[/tex]

0.127 mol Au

Math

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 25.0 g Au

[Solve] moles Au

Step 2: Identify Conversions

[PT] Molar Mass of Au - 196.97 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.126923 mol Au ≈ 0.127 mol Au

Answer:

[tex]\boxed {\boxed {\sf 0.127 \ mol \ Au}}[/tex]

Explanation:

To convert from mass to moles, the molar mass must be used. This can be found on the Periodic Table.

Use this number as a ratio.

[tex]\frac {196.96657 \ g\ Au }{1 \ mol \ Au}[/tex]

Multiply by the given number of grams.

[tex]25.0 \ g \ Au*\frac {196.96657 \ g\ Au }{1 \ mol \ Au}[/tex]

Flip the fraction so the grams of gold will cancel.

[tex]25.0 \ g \ Au*\frac {1 \ mol \ Au}{196.96657 \ g\ Au }[/tex]

[tex]25.0*\frac {1 \ mol \ Au}{196.96657 }[/tex]

[tex]\frac {25.0 \ mol \ Au}{196.96657 }[/tex]

[tex]0.1269250919 \ mol \ Au[/tex]

The original measurement has 3 significant figures, so the answer must have the same. For the number we calculated that is the thousandth place. The 9 in the ten thousandth place tells us to round the 6 to a 7.

[tex]0.127 \ mol \ Au[/tex]

25.0 grams of gold is about 0.127 moles of gold.

Answer:

Both the system and the surroundings are losing 260 J. The system is gaining 260 J, while the surroundings are losing 260 J. Both the system and the surroundings are gaining 260 J. The system is losing 260 J, while the surroundings are gaining 260 J. None of the above is true.

Answer:

Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living things. ... Plants use water from the soil, carbon dioxide from the air, and energy from sunlight to make their own food.

Explanation:

Answer: yes they do here are is an example a tree depends on water to keep it hydrated.  

Explanation:

Answer:

1. Dynamic equilibrium is a equilibrium in which the rate of forward direction is equal to the rate of backward direction. It is represented by a right left arrow.

2) Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_c[/tex]  

For the given chemical reaction:

[tex]Fe^{3+}(aq)+SCN^-(aq)\rightleftharpoons [Fe(SCN)]^{2-}(aq)[/tex]

The expression for [tex]K_c[/tex] is written as:

[tex]K_c=\frac{[[Fe(SCN)]^{2-}]}{[Fe^{3+}][SCN^-]}[/tex]

3) The value of [tex]K_c[/tex] is 1000 , which means the products are more favoured as compared to reactants and that the equilibrium lies more towards product side.

Answer:

41000 is the answer

The amount of microliters in 41.0 mL is 41,000 microliters

To convert milliliters (mL) to microliters (µL), you need to multiply the value in milliliters by 1000 because there are 1000 microliters in 1 milliliter.

So, to convert 41.0 mL to microliters:

41.0 mL * 1000 = 41,000 µL

Therefore, there are 41,000 microliters in 41.0 mL.

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Answer:

Calcium is the 20th element, with 20 protons. Since a stable atom has a net charge of 0, we must have 20 electrons. The number of neutrons will be the same as the number of protons, or else we will have an isotope, in this case, it is also 20.

Explanation:

Answer:

The frequency of the electromagnetic wave is 7.22891566 × 10¹⁴ Hz

Explanation:

The wavelength of the electromagnetic wave, λ = 415 nm

The speed of an electromagnetic wave, c ≈ 3.0 × 10⁸ m/s

Given that an electromagnetic wave is a periodic wave, we have;

The speed of the electromagnetic wave, c = f×λ

Where;

f = The frequency of the electromagnetic wave

Therefore, we have;

f = c/λ

From which we have;

f = (3.0 × 10⁸ m/s)/(415 nm) = 7.22891566 × 10¹⁴ /s = 7.22891566 × 10¹⁴ Hz

The frequency of the electromagnetic wave, f = 7.22891566 × 10¹⁴ Hz

Oki,

1. Earth is third planet away from the Sun whiles Mars is the fourth planet away from the Sun.

2.. Earth takes 365 days to revolve around the Sun whiles Mars takes 687 days to do so.

3. Earth is the fifth largest planet in the Solar System whiles Mars is the second smallest planet.

4. Mars is reddish in colour but Earth is not

5. About 70% of the earth is covered with water but Mars is just covered with bare dust and rocks.

Hope this is enough

about the door is locked and I think I have a few questions about the door is locked and I think I have

Explanation:

can you tell me what the door is locked and I think I have a few questions about the door is locked and I think I have a few questions

Answer:

Electricity. Coal alone provides half the electricity in the United States. ...

Heating. Oil and natural gas are commonly used for heating homes as well as providing heat for industrial applications.

Transportation. Oil supplies 99 percent of the energy for cars in the form of gasoline and diesel. ...

Limits. ...

Considerations.

Explanation:

Answer:

electrical

Explanation:

With electrical energy, it's helpful to think of an on/off switch. When the switch is off, the electrical energy is stored as potential energy. When the switch is on, electrical energy is being used as kinetic energy.

Answer:

0.2 mole

Explanation:

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

Number of molecules = 12.06×10²²

Number of mole =?

From Avogadro's hypothesis,

6.02×10²³ molecules = 1 mole

Therefore,

12.06×10²² molecules = 12.06×10²² / 6.02×10²³

12.06×10²² molecules = 0.2 mole

Thus, 12.06×10²² molecules is equivalent to 0.2 mole

Answer:

Cathode: Mn → Mn²⁺  +  2e⁻    (Oxidation)

Anode: Zn²⁺  +  2e⁻  →  Zn   (Reduction)

Mn | Mn²⁺ ||  Zn²⁺  | Zn

Explanation:

To identify the half reaction we need to see the oxidation states.

Mn(s) → Ground state → Oxidation state = 0

Mn(NO₃)₂ → Mn²⁺  → The oxidation state has increased.

This is the oxidation reaction. It has released two electrons:

Mn → Mn²⁺  +  2e⁻

Zn(NO₃)₂ →  Zn²⁺

Zn → Ground state → The oxidation state was decreased.

This is the reduction reaction. It has gained two electrons:

Zn²⁺  +  2e⁻  →  Zn

Cathode: Mn → Mn²⁺  +  2e⁻

Anode: Zn²⁺  +  2e⁻  →  Zn

Mn | Mn²⁺ ||  Zn²⁺  | Zn

Answer:

The cytoplasm of erythrocytes is rich in hemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red color of the cells and the blood. Each human red blood cell contains approximately 270 million of these hemoglobin molecules.

Answer:

q= -40.236 or 40.236 KJ of heat released

Explanation:

I attached a picture + a cooling curve.