There are problems with using information about CO₂ emissions by fossil fuels to draw
conclusions about the effect of carbon dioxide emissions on global sea levels.
Suggest what these problems are.

Answer:

This is called a chemical reaction. gas may form.heat may be produced and the color may change

a) Mg is oxidized and O2 is reduced

b) Zn is oxidized while Pb(NO3)2 is reduced.

Oxidation is defined as:

Reduction is defined as:

Looking at the first reaction, the Mg atom gains oxygen to become MgO. This means that Mg is oxidized. The oxidizing agent is O2. At the same time, O2 is being reduced and the reducing agent is Mg.

For the second reaction, the oxidation number of Pb is reduced from +2 to 0. Thus, Pb has been reduced by Zn while Zn itself has been oxidized. The reducing agent here is Zn while the oxidizing agent is Pb(NO3)2.

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The mass of magnesium cyanide needed to prepare the solution is 1.57 g

We'll begin by calculating the number of mole of Mg(CN)₂. This can be obtained as follow:

Volume = 275 mL = 275 / 1000 = 0.275 L

Molarity of Mg(CN)₂ = 0.075 M

Mole = Molarity x Volume

Mole of Mg(CN)₂ = 0.075 × 0.275

Mole of Mg(CN)₂ = 0.020625 mole

Mole of Mg(CN)₂ = 0.020625 mole

Molar mass of Mg(CN)₂ = 24 + 2(12 + 14) = 76 g/mol

Mass = mole × molar mass

Mass of Mg(CN)₂ = 0.020625 × 76

Mass of Mg(CN)₂ = 1.57 g

Therefore, 1.57 g of Mg(CN)₂ is needed to prepare the solution

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Dates are collected carefully and with a lot of laborious work, much as how they are cultivated. After adding water and filtering the homogenized result with a cellulose filter aid, date fruits are removed using a wet grinding process.

The polysaccharide cellulose, an organic molecule with the formula n, is made up of a linear chain of several hundred to many thousands of D-glucose units that are covalently bonded.

Plant cell walls include the carbohydrate cellulose. The structure of the carbohydrate is polysaccharide. A lengthy chain of many sugar units joined by chemical bonding makes up a polysaccharide. Examples of polysaccharides include starch, chitin, glycogen, cellulose, and glycogen.

Use of a reach lift varies greatly depending on the size of the trees. This lift carries an employee up the trees to gather the date bunches. The filtering aid might be date pits. Before filtering, a fermentation may be performed.

Thus, Dates are collected carefully and with a lot of laborious work, much as how they are cultivated.

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Answer:

This animal produces offspring that are genetically different from itself.

Explanation:

Answer:

answer is A

This animal produces offspring that are genetically different from itself.

Explanation:

hope this helps!

First of all, Z is unknown. I hope it is a mistake.

        Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.

        As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.

        Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.

( No internal links available for reference. For clarification, check the periodic table).

Answer:

Organic chemistry

Explanation:

Organic chemistry is part of the chemistry that studies carbon compounds, which also use organic compounds, which have characteristics.

Answer:

23

Explanation:

Answer:

0.118m

Explanation:

Atoms are basically the smallest units of matter. They are made up of  protons, neutrons and electrons.

The periodic table is a tabular arrangement of the chemical elements which are organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. The periodic table lists the elements in order of increasing atomic number and grouped into rows (periods) and columns (groups). The elements in the same column have similar chemical properties, with the elements in the same row having similar outer electron configurations.

Atom X: Number of protons = 6

Atom Y: Number of protons = 6

b. Atoms X and Atom Y are in the same family; but not the same row; in the periodic table.

Hence, Option B is correct.

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The question is:

Question 3 (5 points) (02.06 MC) The table compares some characteristics of two atoms_ Charged Particles Atom Number 0f Neutrons Mass Number] Use the table t0 determine the number of protons for each atom: Then_ choose the statement below that Is true about the two atoms_ points) Atom X and Atom are in the same row; but not the same family; on the periodic table Atoms X and Atom Y are in the same family; but not the same row; in the periodic table; Atom Xis in a column to the right of Atom Y in the periodic table: Atom X and Atom occupy the same position in the periodic table because they are isotopes.

Explanation:

'Z' would be compounds ....like ' chemical compounds'  made up of elements

Answer:

A

Explanation:

The Volume of water contains 165 mg of pb is 0.165ml

The amount of matter in a particle or object is represented by the dimensionless quantity mass (symbolised m). The kilogramme (kg) is the accepted unit of mass in the International System (SI).

We can use the following formula to determine how much water has 165 mg of lead in it:

Volume times Density = Mass

Since we are aware of the density of water (1.0 g/ml) and the amount of

lead (165 mg), we can modify the formula to determine the volume:

Mass x Density = Volume

Unit conversion to SI units:

165 mg is equal to 0.165 g

We can now determine the volume:

volume is equal to 0.165 g / 1.0 g/ml (0.165 ml).

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Answer: the moving of something from its place or position:

Explanation: hopes this helpe D:

Answer:

its a reaction where an atom or a set of atoms gets displaced get taken over by another atom

Explanation:

Balanced  oxidation-reduction equation: Al(s) + Ag+(aq) → AP+(aq) + Ag(s) a. A(s)+3Ag is b. Al(s) + 3Ag+(aq) → 3Al3+(aq) + Ag(s)

The correct balanced oxidation-reduction equation for the reaction between aluminum and silver ions is option (b): Al(s) + 3Ag+(aq) → 3Al3+(aq) + Ag(s).

In this reaction, aluminum (Al) is oxidized and loses electrons to form aluminum ions (Al3+), while silver ions (Ag+) are reduced and gain electrons to form solid silver (Ag).

The balanced equation shows that 1 mole of aluminum reacts with 3 moles of silver ions to produce 3 moles of aluminum ions and 1 mole of silver. This equation is balanced because the number of atoms of each element is equal on both the reactant and product side and the total charge is balanced as well.

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Answer:

c. alcohol

it has no substance

Answer:

Because they are both of the same functional groups (alkane)

Answer:  

0.15 sec/min = 9 sec/hour

9*24 = 216 seconds = 3.6 minutes

Explanation:

Answer:

216 Seconds

Explanation:

If every minute is 60 seconds than 60 multiplied by .15 is 9 Seconds Lost.

If every hour is 60 minutes compared to what we know than 24 hours multiplied by 60 is 1440 minutes.

Do the same math as before: 1440 x .15 = 216 Seconds

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 8 cm³

density = 1.5 g/cm³

We have

mass = 8 × 1.5

We have the final answer as

Hope this helps you

The oxygen binding by hemocyanins is mediated by d) a copper atom.

Hemocyanins are copper-containing proteins found in the blood of some invertebrates, such as mollusks and arthropods. The copper atoms in hemocyanins bind with oxygen molecules, allowing the transport of oxygen throughout the organism's body.

                                        Unlike hemoglobin in vertebrates, which uses iron ions to bind with oxygen, hemocyanins use copper atoms. The copper atoms in hemocyanins form a complex with oxygen molecules, which gives the protein a blue color. This process is essential for the survival of many invertebrates that rely on hemocyanins for oxygen transport.
                                         The oxygen binding by hemocyanins is mediated by e) a pair of copper atoms. Hemocyanins are respiratory proteins that use copper ions, rather than iron ions, for oxygen transport. These copper atoms work together to bind oxygen, allowing hemocyanins to carry out their oxygen transport function in invertebrates such as mollusks and arthropods.

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Answer:

what is the question

Explanation:

Answer:

Um what do u want us to check?

Explanation:

Answer:

option c. i took the quiz

Explanation:

Explanation:

H2O2: hydrogen peroxide.

hope it will help u ✌️

Structural formulas of polymers show the actual arrangement of atoms within the polymer. This helps us to explain some of the observed properties of the polymer.

A polymer is composed of monomers. Monomers are small molecules which could link together to form a larger molecule.

There are three kinds of formulas that could be used to represent a chemical substance;

Th structural formula shows the actual arrangement of atoms in the polymer. When we have an idea of the actual arrangement of atoms in the polymer, certain properties of the polymer substance become easily understandable.

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Answer:

C

Explanation:

All of the other options fall under either history or subjective opinion, and C is the only one which refers the actual properties of the planet itself.

Answer:

quartz (SiO2)n

Explanation:

Melting point is defined as the temperature or point at which the substances change its state from solid to liquid.

Quartz (SiO2)n has high melting point than O2 because Quartz (SiO2)n is found in the form of hard, crystalline mineral that is made up of silicon and oxygen atoms having strong covalent bonds between all the atoms. So, a lot of energy is required to break the bond between the atoms and it has a high melting point.

Hence, the correct answer is quartz (SiO2)n.

1 / 102.0 g/mol is the correct way to write the inverted molar mass of aluminum oxide as a conversion factor.

The mass of a specific chemical ingredient or chemical agent (g) multiplied by the quantity of stuff is known as the molar mass (mol). By multiplying the standard atomic weights (in g/mol) of component atoms, one can identify the molar density of a compound. The molar mass of a solid is a bulk attribute rather than a molecular one.

Aluminum oxide has a molar mass of 102.0 g/mol.

1 mol Al₂O₃ = 102.0 g

=> 1 = 1 mol Al₂O₃  / 102.0 g = 1 / 102.0 g/mol

As a result, the conversion factor that you can use to convert aluminum oxide's mass in grams to moles is 1 / 102.0 g/mol.

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Answer:

The correct electron configuration for a ground-state nitrogen atom is 1s2 2s2 2p3.

Explanation:

In this electron configuration, the nitrogen atom has a total of seven electrons, which are arranged in the various energy levels or shells around the nucleus. The first two electrons are in the first energy level or shell, which is represented by the 1s orbital. The next two electrons are in the second energy level or shell, which is represented by the 2s and 2p orbitals. The final three electrons are in the third energy level or shell, which is represented by the 2p orbital.

This electron configuration corresponds to the ground state of the nitrogen atom, which is the lowest energy state that the atom can occupy. The electron configuration can be written in a shorter form using the noble gas shorthand notation, in which the electron configuration of the preceding noble gas is used as a starting point and the remaining electrons are added. Using this notation, the electron configuration of nitrogen can be written as [He] 2s2 2p3.