Write a word equation for
H2O2 + liver

Two properties that the elements in the last two columns of the Periodic Table share with one another are;

The elements in the last two columns of the periodic table are the group 17 and group 18 elements of the periodic table.

The elements in group 17 are known as halogens while the elements in group 18 are known as noble gases.

The halogens includes the following elements - Fluorine, Chlorine, Bromine, Iodine, Astatine, and Ununsepetium.

The noble gases include the following elements - Helium, Neon, Argon, Krypton, Xenon, and Unonoctium.

A common feature of these elements is that they are all non-metals. The elements also show gradation in their physical and chemical properties.

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The heat produced by 4.5 moles of magnesium when burnt is 2700 kJ.

A thermochemical reaction is a reaction in which the amount of heat lost or gained is included in the reaction equation. The thermochemical reaction equation for the combustion of magnesium is shown as follows;

2 Mg(s) + O2(g) → 2 MgO(s) + 1200 kJ

From the reaction equation;

2 moles of magnesium produced 1200 kJ of heat

4.5 moles of magnesium will produce 4.5 moles × 1200 kJ/2 moles

= 2700 kJ

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The Newton's first (1st) Law of Motion is called the Law of Inertia.

Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless it is acted upon by an external force.

This law (Newton's first law of motion) is called the law of inertia because it depends on mass of the object.

Inertia is the measure of reluctance of an object to move or resist motion when a force is applied to it.

The more massive an object is, the more inertia it will possess because it will exert a greater resistive force to prevent motion.

Basically, the Newton's first law of motion is all about the difficulty to stop an object in motion or get an object at rest to start moving on its own. The resistive force of the object to prevent motion can be overcame when an external force is applied to the object.

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Answer:

When those atoms are given energy, the electrons absorb the energy and move to a higher energy level. ... These energy levels of the electrons in atoms are quantized, meaning again that the electron must move from one energy level to another in discrete steps rather than continuously

The proper numbering is 4, 2, 1, and 3.

The following sequence of actions can be used to describe how an undersea sedimentary rock is formed.

Sedimentary Rock

In a basin, sediments and animal skeletons start to accumulate.

The material that has been deposited starts to become bound together by a glue ingredient brought in by running water, such as calcite or clay. The deposits start to become harder.

The deposits eventually transform into rock that is solid and hard. The new rock is a mixture of several organic and inorganic components.

Existing rocks become sediments as a result of weathering.

What causes sedimentary rocks to form?

Sedimentary rocks are formed when previously existing rocks or pieces of extinct animals accumulate on the surface of the Earth. Sediment that has been buried deeply becomes compacted

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The following compounds should be ranked in order of increasing acidity, starting with the least acidic compound at the top: SiH4, H2S, PH3.

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Answer:

101 L

Explanation:

35.0 g KOH ÷ 56.09 g/mol KOH × (1 mol H2O/ 1 mol KOH) × 18 g/mol H2O = 11.2 g H2O

35.0 g HCl ÷ 36.45 g/mol HCl × (1 mol H2O/ 1 mol HCl) × 18 g/mol H2O = 17.3 g H2O

35.0 g KOH is the limiting reactant

0.013 g of the stock solution of riboflavin needs to be added to 25 ml of water to prepare a 14 μM solution.

To prepare a 0.059 mM riboflavin solution in 25 ml, we need to calculate the amount of riboflavin to add to 25 ml of water.

First, we need to convert the concentration from mM to μM:

0.059 mM × 1000 μM/1 mM = 59 μM

Next, we need to calculate the amount of riboflavin required to prepare a 25 ml solution with a concentration of 59 μM:

59 μM × 25 ml = 1475 μmol

Finally, we need to convert μmol to milligrams:

1475 μmol × (375.2 g/mol) / (10⁻⁶ μmol/mol) = 0.055 g

So, 0.055 g of the stock solution of riboflavin needs to be added to 25 ml of water to prepare a 0.059 mM solution.

To prepare a 14 μM riboflavin solution in 25 ml, we need to calculate the amount of riboflavin to add to 25 ml of water:

14 μM × 25 ml = 350 μmol

Finally, we need to convert μmol to milligrams:

350 μmol × (375.2 g/mol) / (10⁻⁶ μmol/mol) = 0.013 g

So, 0.013 g of the stock solution of riboflavin needs to be added to 25 ml of water to prepare a 14 μM solution.

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Answer:

Hi there!

Your answer is:

D. conditional statement

Explanation:

Conditional statements are always in the form If... then... !

They mean that if action 1 occurs, then action 2 will occur!

Hope this helps!

This problem is providing information about the states of matter and a given diagram showing a molecular arrangement it has. Thus, we can start off by analyzing the attached file, which shows molecular arrangements and movements each state exhibits.

Solids are quite organized so that they are able to form molecular networks in which molecules vibrate but do not displace anywhere. Liquid molecules are close enough to have small movements and vibrations but are not able to form any organized network.

Gases, however, exhibit no molecular organization but large movements inside the container whose walls the gas constantly crash against. Plasma do not have any order neither yet it contains ions.

In such a way, since the given diagram do not have any apparent order or ion, we infer this is about a gas that moves into the container and crash against its walls.

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Answer:

Characteristics of oxygen are as follows:

Answer:

The Chlorine atom has higher ionization energy.

Explanation:

Ionization energy is the energy needed to separate an electron from an atom of an element in the gaseous state.

In the Periodic Table of Elements, Ionization energy increases from bottom to top (in a group), and increases from left to right (in a period).

In the folowing drawing we can see the variation of the Ionization energy and the location of the magnesium atom and chlorine atom:

Magnesium atom and Chlorine atom are located in the same period, but Mg is in group 2 (left side) and Cl in in group 17 (right side), so the Chlorine atom has higher ionization energy.

Answer:

V = 11.2 L

Explanation:

Hello there!

In this case, according to the ideal gas equation:

\(PV=nRT\)

It is possible to compute the volume as shown below:

\(V=\frac{nRT}{P}\)

Whereas the moles are computed are computed given the mass and molar mass of oxygen:

\(n=16g*\frac{1mol}{32g} =0.5mol\)

Now, since the STP stands for a temperature of 273.15 K and a pressure of 1 atm, the resulting volume is:

\(V=\frac{0.5mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=11.2L\)

Best regards!

Answer:

\($Cu_2+(SO_3)^2 \rightleftharpoons CuSO_3 \ (insoluble)$\)

\($Cu_2+2(SO_3)^2 \rightleftharpoons [Cu(SO_3)_2]_2 \ (soluble)$\)

Explanation:

A ligand may be defined as a molecule or an ion or that binds to the central metal atom in order to form a more coordination complex. Sulfite is one such ligand and it behaves similarly as hydroxide as a ligand.

Now, according to the question, when we react copper with sulfite ion, it forms copper sulfite. The equation is

\($Cu_2+(SO_3)^2 \rightleftharpoons CuSO_3 \ (insoluble)$\)

Now when excess of the sulfite ion is used in the reaction, we get a complex formation, which is shown by

\($Cu_2+2(SO_3)^2 \rightleftharpoons [Cu(SO_3)_2]_2 \ (soluble)$\)

The way the sulfite reacts is quite similar to hydroxide ion where they form a complex ion when hydroxide ion in excess is used in the reaction with metal cation.

Answer:

C: short-day and day-neutral plants

Explanation:

There is no figure above.

Answer:

ty

Explanation:

your question is invalid

CuI2 is not a known compound. Copper compounds typically have different oxidation states for copper, resulting in various compound names.

Copper(II) oxide (CuO): It is a black solid compound where copper is in the +2 oxidation state. It is commonly used as a pigment and in catalytic reactions.

Copper(II) sulfate (CuSO4): It is a blue crystalline compound in which copper is in the +2 oxidation state. It is used in various applications such as agriculture, electroplating, and as a laboratory reagent.

Copper(I) oxide (Cu2O): It is a red crystalline compound in which copper is in the +1 oxidation state. It is used as a pigment, in solar cells, and as a catalyst.

Copper(II) chloride (CuCl2): It is a greenish-brown solid compound in which copper is in the +2 oxidation state. It is utilized in various chemical processes, including etching and catalyst synthesis.

Copper(II) nitrate (Cu(NO3)2): It is a blue crystalline compound where copper is in the +2 oxidation state. It is commonly used in the production of catalysts, as a coloring agent, and in electroplating.

These are just a few examples of copper compounds with different oxidation states and properties. It's important to note that the compound CuI2 mentioned in the question, if it exists, would be an exception to the typical nomenclature for copper compounds.

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Answer:

Acids and bases can help neutralize each other.

Acids turn litmus paper red, bases turn it blue.

Strong bases can be slippery and slimy feeling.

Acids taste sour, bases taste bitter.

Proteins are made up of amino acids.

Vitamin C is also an acid called ascorbic acid.

Ammonia is a base chemical.

Explanation:

school

I just did this for my class.

Here are 10 facts about acids and bases to help you learn about acids, bases, and pH along with a chart for comparison.

1. Any aqueous (water-based) liquid can be classified as an acid, base, or neutral. Oils and other non-aqueous liquids are not acids or bases.

2. There are different definitions of acids and bases, but acids can accept an electron pair or donate a hydrogen ion or a proton in a chemical reaction, while bases can donate an electron pair or accept hydrogen or a proton.

3. Acids and bases are characterized as strong or weak. A strong acid or strong base completely dissociates into its ions in water. If the compound does not completely dissociate, it's a weak acid or base. How corrosive acid or a base does not relate to its strength.

4. The pH scale is a measure of the acidity or alkalinity (basicity) or a solution. The scale runs from 0 to 14, with acids having a pH less than 7, 7 being neutral, and bases having a pH higher than 7.

5. Acids and bases react with each other in what is called a neutralization reaction. The reaction produces salt and water and leaves the solution closer to a neutral pH than before.

6. One common test of whether an unknown is an acid or a base is to wet litmus paper with it. Litmus paper is a paper treated with an extract from a certain lichen that changes color according to pH. Acids turn litmus paper red, while bases turn litmus paper blue. A neutral chemical won't change the paper's color.

7. Because they separate into ions in water, both acids and bases conduct electricity.

8. While you can't tell whether a solution is an acid or a base by looking at it, taste and touch may be used to tell them apart. However, since both acids and bases can be corrosive, you shouldn't test chemicals by tasting or touching them! You can get a chemical burn from both acids and bases. Acids tend to taste sour and feel drying or astringent, while bases taste bitter and feel slippery or soapy. Examples of household acids and bases you can test are vinegar (weak acetic acid) and baking soda solution (diluted sodium bicarbonate -- a base).

9. Acids and bases are important in the human body. For example, the stomach secretes hydrochloric acid, HCl, to digest food. The pancreas secretes a fluid rich in the base bicarbonate to neutralize stomach acid before it reaches the small intestine.

10. Acids and bases react with metals. Acids release hydrogen gas when reacted with metals. Sometimes hydrogen gas is released when a base reacts with a metal, such as reacting sodium hydroxide (NaOH) and zinc. Another typical reaction between a base and a metal is a double displacement reaction, which may produce a precipitate metal hydroxide.

Answer:

C. mg and Ca

Explanation:

These chemical elements are collectively called as the Alkaline Earth Metals. Calcium and Magnesium are two of the six elements that fall into this category. The outer electronic structure of all these elements is similar due to which they all have similarity in their chemical and physical properties. They are all shiny, though fairly soft but still harder than alkali metals. Further, these are usually white or silvery coloured elements.They react with water to form hydrogen gas and metal hydroxide and with oxygen, they form oxides.

Answer:

The natural abundance of Re-185 is 40% and of Re-187 is 60%

Explanation:

Relative atomic mass is defined as the sum of the mass of each isotope times its relative abundances.

Is Rhenium has only 2 isotopes and the abundances are X and Y we can write:

X + Y = 1 (1)

And:

185X + 187Y = 186.2 (2)

Where X is abundance of Re-185 and Y abundance of Re-187

Replacing (1) in (2):

185X + 187(1-X) = 186.2

185X + 187-187X = 186.2

-2X = -0.8

X = 0.4 = 40%

And Y = 100% - 40% = 60%

Rough ER is connected to the nuclear membrane and is responsible for the synthesis and processing of proteins.

The rough endoplasmic reticulum (ER) is a network of membrane-bound sacs and tubules that is studded with ribosomes on its surface. These ribosomes are responsible for protein synthesis. The rough ER is connected to the nuclear membrane because it receives instructions for protein synthesis from the DNA in the nucleus. This connection allows for the efficient transfer of genetic information from the nucleus to the rough ER.

Once the ribosomes on the rough ER synthesize proteins, the rough ER is also involved in the processing and modification of these proteins. It helps in folding the newly synthesized proteins into their functional three-dimensional shapes and also adds various modifications such as glycosylation (the addition of sugar molecules) or signal sequences that target the proteins to specific locations within or outside the cell.

After processing, the proteins may be transported to other parts of the cell or exported to the cell membrane or extracellular space. The connection between the rough ER and the nuclear membrane ensures a coordinated flow of genetic information and protein synthesis, allowing the cell to efficiently carry out its functions.

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Answer:

A. 0.027 M

B. 0.0054 M

C. 31 cm³

Explanation:

A. Determination of the final concentration (Molarity)

Initial Volume (V₁) = 27 cm³

Initial concentration (C₁) = 0.150 M

Final volume (V₂) = 150 cm³

Final congratulation (C₂) =?

C₁V₁ = C₂V₂

0.150 × 27 = C₂ × 150

4.05 = C₂ × 150

Divide both side by 150

C₂ = 4.05 / 150

C₂ = 0.027 M

Thus, the final concentration of the solution is 0.027 M

B. Determination of the final concentration (Molarity)

Initial Volume (V₁) = 35.71 cm³

Initial concentration (C₁) = 0.0756 M

Final volume (V₂) = 500 cm³

Final congratulation (C₂) =?

C₁V₁ = C₂V₂

0.0756 × 35.71 = C₂ × 500

Divide both side by 500

C₂ = (0.0756 × 35.71) / 500

C₂ = 0.0054 M

Thus, the final concentration of the solution is 0.0054 M

C. Determination of the final volume.

Initial Volume (V₁) = 10 cm³

Initial concentration (C₁) = 0.155 M

Final congratulation (C₂) = 0.05 M

Final volume (V₂) =?

C₁V₁ = C₂V₂

0.155 × 10 = 0.05 × V₂

1.55 = 0.05 × V₂

Divide both side by 0.05

V₂ = 1.55 / 0.05

V₂ = 31 cm³

Thus, the final volume of the solution is 31 cm³

Option b is the correct answer. Nucleic acid is a type of biochemical is shown in this illustration.

The representation gave is an improved on variant of the design of a nucleotide, which is a structure block of nucleic acids like DNA and RNA. The nucleotide comprises of three parts: a sugar particle (displayed in the representation as CH2OH), a nitrogenous base (not displayed in this delineation), and a phosphate bunch (displayed in the representation as - O-P=O). The phosphate bunch is adversely charged and can shape hydrogen bonds with different nucleotides to make the foundation of the nucleic corrosive strand. The plan of nucleotides and the arrangement of the nitrogenous bases decide the hereditary code and capability of the nucleic corrosive.

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a toy car hitting a wall and bouncyingack

b

Answer:

barrett is correct as we are finding new elements everyday!

Explanation:

Answer:

NH3 is the most likely covalent compound  

Explanation:

Other Choices are:

LiF- Ionic compound  

MgS- ionic compound  

CaCl2- ionic compound  

The most likely to have a covalent bond is NH₃. The correct option is c. covalent bonds are the strongest bonds among all.

A covalent bond is formed between two atoms by the mutual sharing of one or more pairs of electrons. The two atomic nuclei attract these electrons at the same time. When the difference in electronegativities of two atoms is too tiny for electron transfer to produce ions, a covalent bond occurs.

The unequal sharing of electrons between the combining atoms results in the formation of a polar covalent bond. The equal sharing of electrons between the combining atoms results in the formation of a non-polar covalent bond.

LiF- Ionic compound  

MgS- ionic compound  

CaCl₂- ionic compound  

Therefore, the correct option is c, NH₃.

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