what do many bases have in common

The correct ratio of the atoms of the two elements in the sample of copper chloride compound would be 1:2.

Copper chloride has a chemical formula, \(CuCl_2\).

Thus, an atom of copper, Cu, combines with 2 atoms of chlorine, Cl.

The 2 chlorine atoms are recipients of an electron each from the copper atom which happens to have 2 electrons in its outermost valence shell.

Therefore, the ratio of copper to chlorine atoms in the compound is 1:2.

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Answer:

Troposphere

Explanation:

The troposphere is the lowest layer of Earth's atmosphere that extends from under the stratosphere down to the surface of the earth. Nearly all weather condition takes place in the troposphere. The troposphere contains about 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols in the atmosphere.

Answer: Pressure decreases.

Explanation:

Atmospheric pressure is termed as the  downward force applied by the weight of air against a particular area on Earth's surface.  the Standard atmospheric pressure is determined  by weighing the column of air occupying  1 square inch on Earth's surface which begins  at sea level and moves  upward to the uppermost layer of the atmosphere

Measuring the Atmospheric pressure from sea level to the stratosphere,the second layer of the atmosphere which contains the most of the ozone gas show that the pressure decreases

Answer:

qui bcuyrbfvcsyfbreyqavb

Explanation:

dnjsfn bsigbeauysbk

When measuring the volume of a liquid in a graduated cylinder, the measurement should be taken at the bottom of the meniscus, which is the curved surface of the liquid where it meets the walls of the cylinder.

It is important to take the measurement at eye level and to read the measurement with as much detail as possible, including any fractions or decimals indicated on the graduated scale. This will ensure an accurate measurement of the liquid volume.
                                         When measuring the volume of a liquid in a graduated cylinder, the measurement should be taken at the bottom of the meniscus. The meniscus is the curved surface of the liquid, formed due to surface tension between the liquid and the container. To take an accurate measurement, read the volume at eye level and perpendicular to the graduated scale on the cylinder.

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The electron configuration of bromine is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵. To determine the number of core electrons, we need to identify the electrons in the inner energy levels or shells.

In the case of bromine, the innermost energy level is the 1s orbital, which contains 2 electrons. Moving outward, the next energy levels, 2s and 2p orbitals, contain a total of 8 electrons. The 3s and 3p orbitals hold another 8 electrons, followed by the 4s and 3d orbitals with a combined total of 20 electrons. Finally, the 4p and 5s orbitals accommodate 7 electrons. Therefore, the core electrons in bromine are the electrons in the innermost energy levels: 1s² 2s² 2p⁶ 3s² 3p⁶. Adding them up, we find that bromine has 28 core electrons. These electrons are not involved in chemical bonding and are shielded by the valence electrons in the outer energy levels.

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Answer:

  D.  2.8×10⁵ kg·m/s

Explanation:

You want the momentum of the system after the collision of a 1.2×10⁴ kg freight car with a velocity of 23 m/s and a stationary car of equal mass.

The total momentum of the system will be conserved through the collision. This means the final momentum is the same as the initial momentum:

  momentum = m1·v1 +m2·v2 = (1.2×10⁴ kg)(23 m/s) + (1.2×10⁴ kg)(0 m/s)

  momentum ≈ 2.8×10⁵ kg·m/s . . . . . matches choice D

Answer:

Noble gases

Explanation:

The noble gases are non-metals that requires the highest amount of energy to remove an electron from their shells.

The reason for this difficult is that their electronic configuration confers a stable configuration them.

Answer:

wait can you go more in detail i can help you because i dont understand whats going on

Answer:

the earth and moon rotate around the sun, therefore on sides facing the sun while the other is facing the moon

The atomic number of the atom shown in the picture would be nine because there is a total of nine protons present inside the nucleus of the atom and the number of protons represents the atomic number of the atom.

The number of neutrons is unrelated to the atomic number of an atom.

An atom's atomic number is determined by the total number of protons it contains.

The number of neutrons is unrelated to the atomic number of an atom.

The atoms in the image would have an atomic number of nine since its nucleus contains a total of nine protons, and the number of protons corresponds to the atomic number of the atom.

Thus, the atomic number of the atom shown would be nine.

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Answer: Distance the car has driven

Explanation:

The speed equation is speed=distance/time and since we already know time we need to know distance to solve for speed

Answer:

The decrease of decomposers. The decrease of decomposers led to a change in carbon dioxide in biodome files.

a. 2K₃PO₄ + 3MgCl₂ ----> Mg₃(PO₄)₂ + 6KCl

b. Fe + Na₂CO₃ -----> FeCO₃ + 2Na

c. CH₄ + 2O₂ ------> CO₂ + 2H₂O

d. H₂ + Cl₂ -------> 2HCl

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Answer:

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of organic chemical compounds

Explanation:

IUPAC

Answer:

uip name : propane-1,2,3-triol

Ribosomes are cell structures that make protein. They are the primary site of the synthesis of protein. They are made up of protein and RNA.

Ribosomes are cell organelles scattered in the cytoplasm of the cell. They are tiny and round vesicles. They are present in both prokaryotic and eukaryotic cells. Furthermore, they are present freely in the cytoplasm. Ribosomes are also present near the endoplasmic reticulum.

Ribosomes are made up of RNA and protein, and they synthesize the protein in the cell. Ribosomes read the mRNA and by these codes of mRNA, it constitutes amino acids, that grow into a long chain of the protein.

Thus, ribosomes are the parts of cells that produce protein. They serve as the central location for protein production. They are composed of RNA and protein.

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Answer:

2.5 g of platinum

Explanation:

Recall that a catalyst is a specie added to a reaction system to increase the rate of reaction. A catalyst does not participate in the chemical reaction hence it remains unchanged at the end of the chemical reaction. A catalyst merely provides an alternative reaction pathway by lowering the activation energy of the reaction system. Hence a catalysed reaction usually proceeds faster with less energy requirement than the uncatalysed reaction.

Since the catalyst does not participate in the reactions and remains unchanged at the end of the reaction, the mass of platinum will remain the same (2.5g). The mass can only change if a specie participates in the chemical reaction. Hence the answer.

2.5 g of platinum will there be left in the vessel at the end of the reaction

The following information should be considered:

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Answer:

A. Sodium (Na)

Explanation:

The total number of electrons in the outermost principal energy level of an element is called the valence electrons of that element.

Na (11)---→1s2 2s2 2p6 3s1

There 1 electron in the outermost principal energy level of Sodium. So, the number of valence electron of Sodium is 11.

Answer:

Na

Explanation:

I was learning about it recently, that dude's right, it's Sodium

Silver chloride, often used in silver plating, contains 75.27% Ag. 450mg is the  mass of silver chloride in grams required to make 4.4 g of silver plating.

Silver is stable in clean air and clean water, but tarnishes whenever subjected to ozone, hydrogen sulfide, especially sulfurous air. Silver is largely utilized in electroplating for industrial purposes, notably electrical connections.

1 mole of AgCl, 0.7527 mol of Ag present.

1 mol of Ag is obtained from 1/0.75mol of AgCl

number of moles =  4.4 g / 107.87=0.002mol

0.002364 mol of Ag will be obtained from 0.002mol/ 0.7527 =0.003 mol

mass = moles × molar mass

        = 0.03 × 143.3=0.450g=450mg

Therefore, 450mg is the  mass of silver chloride in grams required to make 4.4 g of silver plating.

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Answer:

A Bacteria

Explanation:

Answer:

Group 5

Explanation:

Using method of elimination:

A. Group 1

Also known as the Alkali metals group. It contains metals such as lithium and sodium. This option is incorrect.

B. Group 2

Also known as the Alkali Earth metals group. It contains metals such as Magnesium and calcium. This option is incorrect.

C. Group 3

It contains metals such as Aluminium and scandium. This option is incorrect.

D. Group 5

This is the correct option. The elements in these group are non metals. Examples include Nitrogen.

Answer: oh i thought i knew it nvm im sorry love

Explanation:

A, the total number of valence electron is 24 for Silicon Tetrachloride , SiCl₄ .

In Lewis Dot structure S=N-A is used to calculate the total number of shared and unshared electrons in a molecule.

S is the number of shared electrons ,N is the number of total valence shell electrons required by all the atom of the molecule, A is the total number of valence electrons available from all the atoms in the molecule

For SiCl₄,

• We have to first count the valence electron on each atom that is coming to form a molecule .

Valence electron on Si = 4

Valence Electron on Cl = 7

Total valence electron on SiCl₄ = 4+ 4 * 7 = 32

• Then we find the least electronegative atom in the molecule and place it at the center , In SiCl₄ , Si has 1.8 and Cl has 3.16 and so Si is placed at the center and four Cl atoms are connected with a single bond

• A single bond takes up 2 valence electron and so for four bonds 8 valence electrons have been occupied , so we are left with 32-8=24 valence electrons.

Therefore In the Lewis Dot structure S=N-A , Total number of valence electrons available from all the atoms in molecule of SiCl₄ is 24.

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Answer:

There are 2 hydrogen atoms, one magnesium atom, and 5 atoms in total.

Explanation:

We are given a compound in formula form. To make things easier to understand, we can first convert this to the name of the compound.

This compound is one magnesium atom bonded to two hydroxide ions.

Now, we need to determine the charge on the Magnesium atom which is determined from the amount of valence electrons the atom has.

Now, to the number of atoms:

Answer:

the mass of the product of 6.40 g of magnesium with 1.32 g of oxygen is 3.32 g.

Ammonia has a molar mass of 17 g/mol. Ammonia weighs 68 grammes, or 17g/mol. 68g​=4moles From 241 = 2 moles of nitrogen and 243 = 6 moles of hydrogen, 4 moles of ammonia will be produced. Nitrogen and hydrogen have molar weights of 28 g/mol and 2 g/mol, respectively. 56 grammes are equivalent to 2 moles of nitrogen, or 228. 6 moles of hydrogen are equivalent to 12 grammes (62).

From 50.0 grammes of the nitrogen gas 3h2 N2 --> 2nh3, how many grammes of ammonia are produced?

We need to determine how many moles of nitrogen there are in this 50 g of nitrogen gas. We would generate 1.792=3.58 moles of ammonia from this point. 3.58 mol; 17.031 gmol; 61 g of NH3

42 grammes of nitrogen may be converted into how many grammes of ammonia?

b The mass of N and H in the ammonia molecule, NH3, is equal to 14 + 3 1 = 17. The amount of H needed to react with 14 g of N is 3 g. Hence, the mass of H needed to react with 42 g of N is equal to 3/14 42 = 9 g.

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The equilibrium constant (Kc) for the reaction

Ni2 (aq) + 6 NH3 (aq) ⇌ Ni(NH3)62+ (aq) is 5.4 x 1017.

The reaction is as follows:

ni2 (aq) + 6 NH3 (aq) ⇌ Ni(NH3)62+ (aq)

Equilibrium constant

The equilibrium constant (K) is a quantitative value for a chemical system's dynamic equilibrium. It reflects the ratio of the concentrations of the products to the reactants at equilibrium. A high K implies that the product concentrations are high relative to the reactant concentrations. A low K value indicates that the reactants are favored over the products. The numerical value of K is temperature-dependent.The formula for the equilibrium constant for the reaction is:

K = [Ni(NH3)62+] / [Ni2+][NH3]6

At 25 °C, t

he equilibrium constant for the reaction

Ni2 (aq) 6 nh3(aq) ⇌Ni(nh3)6 2 (aq) is

kf = 5.6 × 108.

The given reaction's equilibrium constant, kf, is 5.6 × 108 at 25 °C.

To find the Kc of this reaction, we need to apply the following formula:

Kc = Kf / [RT]ΔnKf

is the equilibrium constant at a given temperature, R is the gas constant, T is the temperature in Kelvin, and Δn is the change in moles of gas in the reaction.

Here, Δn = n(products) - n(reactants).

Δn = (1) - (1 + 6)

= -6.R

= 8.314 J/mol-K.

T = 25°C + 273.15

= 298.15 K.

Kc = Kf / [RT]

Δn= 5.6 x 108 / [8.314 x 298.15] -6

= 5.4 x 1017

Therefore, the equilibrium constant (Kc) for the reaction

Ni2 (aq) + 6 NH3 (aq) ⇌ Ni(NH3)62+ (aq) is 5.4 x 1017.

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The equilibrium constant for the reaction, Ni² (aq) + 6NH₆(aq) ⇌ Ni(NH₃)₆²⁺ (aq) is 5.6 × 10²⁰ at 25°c.

To find the equilibrium constant for the reaction, Ni² (aq) + 6NH₆(aq) ⇌ Ni(NH₃)₆²⁺ (aq), we use the expression for the equilibrium constant, Kc is

[Ni(NH₃)₆]²⁺/[Ni²⁺][NH₃]₆

The equilibrium constant, Kc = kf / [NH₃]⁶ since the equation contains 6 moles of NH₃ for every mole of Ni. The value of Kc can be calculated using the value of kf.

Kc = kf/[NH₃]⁶

= 5.6 × 10⁸ M⁻¹/ [0.1 M]⁶

= 5.6 × 10⁸ M⁻¹/ 1 × 10⁻¹² M⁶

= 5.6 × 10⁸ M⁻¹ × 10¹² M⁶

= 5.6 × 10²⁰

Hence, the equilibrium constant, Kc = 5.6 × 10²⁰ at 25°C.

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