what is the difference between cells, tissues and organs

The number of mole of sodium hydroxide present in 1.50 L of a 2.55 M NaOH solution is 3.82. Then, the mass of 3.82 moles of NaOH is 153 g.

Molarity of a solution is the ratio of its number of moles of solute to the volume of solution in liters. It is the most common term used to express the concentration of a solution.

Given that,

molarity of NaOH solution = 2.55 M

volume  = 1.50 L

no.of moles = volume × molarity

n = 2.55 × 1.50 = 3.82 moles.

Molar mass of NaOH = 40 g/mol.

then, mass of 3.82 moles of NaOH is = 3.82 × 40 = 153 g.

Therefore, 153 g  of sodium hydroxide is needed to prepare 1.50 liters of a 2.55 m sodium hydroxide solution.

Find more on molarity :

https://brainly.com/question/8732513

#SPJ1

Answer: If the strong force didn't exist, there would be nothing but hydrogen and neutrons floating in space.

Explanation:

The two primary functions of the electron-transport chain are: b) the conversion of ADP to ATP, d) the oxidation of the coenzymes NADH and FADH2.

The electron-transport chain is a series of five protein complexes  and other molecules that are involved in the movement of electrons via redox reactions and also helps in transfer of protons across the membrane. It is apparatus found in the cellular organelle called mitochondrion known as energy house of the cell. The electron-transport chain's primary functions involve the conversion of ADP to ATP, which provides energy for the cell, and the oxidation of coenzymes NADH and FADH2, which releases stored energy for further cellular processes.

Learn more about electron-transport chain : https://brainly.com/question/29727642

#SPJ11

Answer:

89-91=1 the answer is 1molar mass

Answer:

3 grams

Explanation:

14 g of N2   is 1/2 mole

  If you halve the N2   in the balanced equation , you have to halve the H2 down to 1.5 moles of H2    which is 3 grams

Patterns in ionization energy can provide insights into the formation of ions, particularly in predicting the formation of cations (+) and anions (-).

Ionization energy refers to the energy required to remove an electron from a neutral atom, resulting in the formation of a positively charged ion (cation). It is generally observed that atoms with low ionization energy are more likely to form cations. This is because these atoms have a relatively weak hold on their outermost electrons, making it easier to remove an electron and form a positive ion.

On the other hand, atoms with high ionization energy tend to form anions. These atoms have a strong hold on their outermost electrons, making it difficult to remove an electron. Instead, they are more likely to gain electrons and achieve a stable electron configuration by forming negatively charged ions (anions).

By examining the ionization energy trends across the periodic table, we can make predictions about the likelihood of certain elements forming cations or anions. For example, elements on the left side of the periodic table (Group 1 and 2) generally have low ionization energies and tend to form cations with a charge of +1 or +2, respectively. Elements on the right side of the periodic table (Group 16 and 17) typically have high ionization energies and tend to form anions with a charge of -2 or -1, respectively.

By understanding these trends in ionization energy, we can make informed predictions about the formation of ions and the charges they are likely to carry, based on the location of the elements in the periodic table and their tendency to gain or lose electrons.

To know more about ionization energy click this link -

brainly.com/question/28385102

#SPJ11

Answer:

NaI = Na + I2 (diatomic)

Mg3N2 = Mg + N2

MnCl2 = Mn + Cl2

K4Si = K + Si

Explanation:

First convert these written equations into chemical symbols.

Sodium iodide = NaI

Magnesium Nitride = Mg3N2

Manganese II Chloride = MnCl2

Potassium Silicide = K4Si

Then we predict the products by separating the elements.

NaI = Na + I2 (diatomic)

Mg3N2 = Mg + N2

MnCl2 = Mn + Cl2

K4Si = K + Si

However, notice that these are not balanced. If you want you can balance these.

Answer:

its the first one speed of light

Answer:

speed of light

Explanation:

ed21

Answer:

B

Explanation:

B. the total kinetic and potential energies of its particles

Answer:

HELIUM IS HE ANSWER

Explanation:

GOOD LUCK

If a substance is always reduced, it means that its reduction potential is more positive than the reduction potentials of all other substances in the system.

This is because a substance with a more positive reduction potential will be more likely to gain electrons and be reduced.

Reduction potential is a measure of the tendency of a substance to be reduced or to gain electrons, and is often compared to the standard hydrogen electrode (SHE).

If the reduction potential of a substance is more positive than the reduction potential of the SHE, it has a greater tendency to be reduced than hydrogen.

The greater the difference between the reduction potential of a substance and that of the SHE, the greater its tendency to be reduced.

To know more about hydrogen electrode, refer here:

https://brainly.com/question/28198248#

#SPJ11

The oxidation number of specified element in each compound or polyatomic ion is given below :

i) C in ZnCO3 : +4

ii) Fe in Fe(NO3)2 : +2

iii) Cl in ClF4- : +5

iv) S in S2O3 2- : +2

Simply put, an element's oxidation number is the number assigned to it in a chemical combination. The number of electrons that atoms in a molecule can share, lose, or gain while forming chemical connections with other atoms of a different element is known as the oxidation number.

Oxidation state is another name for oxidation number. However, depending on whether or not we are taking into account the electronegativity of the atoms, these phrases might occasionally have a different meaning. In coordination chemistry, the phrase "oxidation number" is commonly employed.

To know more about Oxidation Number :

brainly.com/question/29100691

#SPJ4

The ground-state electron configurations of oxygen, sulfur, and selenium are 2-8-8, 2-8-6, and 2-8-8-6 respectively. Oxygen and selenium both have 8 electrons in their outermost shell, while sulfur has 6.

This difference affects the chemical and physical properties of these elements, as elements with more electrons in their outermost shells tend to be more reactive due to increased electron availability for bonding.

As oxygen and selenium have the same number of electrons in their outermost shell, they have similar chemical and physical properties. Sulfur, with its fewer outer shell electrons, has different chemical and physical properties than oxygen and selenium.

For more question on selenium click on

https://brainly.com/question/30094538

#SPJ11

Answer: 2.5 grams

Explanation:

Expression for rate law for first order kinetics is given by:

\(t=\frac{2.303}{k}\log\frac{a}{a-x}\)

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) to calculate the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

\(t_{\frac{1}{2}}=\frac{0.693}{k}\)

\(k=\frac{0.693}{2years}=0.346years^{-1}\)

b) to find amount left after 4 years

\(4=\frac{2.303}{0.346}\log\frac{10}{a-x}\)

\((a-x)=2.5g\)

Thus 2.5 g of cesium would remain from a 10 g sample after 4 years

LEAST TO MOST POLAR- hexane,diethyl ether,acetone,n-propanol,water ,methanol

Considering the problem  we can say that the kids are compared to be more polar or smaller molecular weight compounds. The more polar compounds interact with silica more just as the kids bus stopped at every point and reached the destination late. Whereas, the adult bus is compared to be less polar compounds or high molecular weight which interacts less and reaches the destination faster.

Thus more polar compounds reaches the destination late whereas less polar compound reaches first.

find more:-brainly.com/question/13765692?referrer=searchResults

#SPJ4

Answer:

1.48×10²⁴ Cu atoms

Explanation:

For this question you need to use Avogadro's number 6.022×10²³atoms.

2.45 moles of Cu ×\(\frac{6.022x10x^{23} atoms }{1 mole}\)= 1.47539×10²⁴ atoms.

The moles cancel out so you are left with atoms.

Since there are 3 significant figures in the question there should be 3 significant figures in your answer, which is 1.48×10²⁴ Cu atoms.

To determine the number of moles of hydrogen needed to crack one mole of the long saturated hydrocarbon chain (C40H82), we can analyze the reactants and products involved in the cracking reaction.

The cracking reaction is given as: C40H82 -> 3 C8H18 + n C2H6. From the equation, we can see that one mole of the long hydrocarbon chain (C40H82) produces three moles of octane (C8H18) and n moles of ethane (C2H6). Since the cracking process involves breaking the carbon-carbon bonds and forming new carbon-hydrogen bonds, the number of hydrogen atoms in the products should remain the same as in the reactant.

The long hydrocarbon chain (C40H82) contains 82 hydrogen atoms, and the products, 3 moles of octane (C8H18), contain (3 moles) * (18 hydrogen atoms/mole) = 54 hydrogen atoms. Therefore, the number of moles of hydrogen needed for cracking one mole of the long hydrocarbon chain can be calculated as: Number of moles of hydrogen = 82 - 54 = 28 moles. Hence, 28 moles of hydrogen are required to crack one mole of the long saturated hydrocarbon chain (C40H82).

To learn more about number of moles click here: brainly.com/question/20370047

#SPJ11

The outer query receives its input from the Subquery. So, The correct answer is option d.

An inner query that is contained within an outer query is known as a subquery. The outer query, which is the primary query, uses the subquery as input. Data is pulled from the database and used in the main query using subqueries.

They are frequently used to compare values from different tables or to return a single value. Additionally, subqueries can be utilised in the FROM, HAVING, and WHERE clauses.

In a subquery, a table or column, a scalar value, or a correlated subquery can all be used. Complex joins can frequently be replaced by subqueries, which results in simpler, easier-to-read SQL code. Top-level records, such as the highest income or the oldest employee, can also be found via subqueries.

Complete Question:
The outer  query receives its input from the ____.

a. inner view

b. outer view

c. nested function

d. subquery

To learn more about SQL visit:

https://brainly.com/question/30591091

#SPJ4

Answer:

A and C represent elements while B and D represent Compounds

Explanation:

chemical elements cannot be broken down into simpler substances by any chemical reaction. While A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds

 we will measure the amount of lithium ion, Li+, present in 0.4 M Li2HPO4. This is attainable as follows: 1 mole of Li2HPO4 resulted in 2 moles of product in the equation for balance above.

What is the purpose of lithium?

Although its activities are unknown, trace levels of lithium are found in biological systems. Lithium salts have shown potential for the treatment for mental illnesses including bipolar disorder as an antidepressant and mood stabilizer. The lithium family, named for its main element, is another name for the alkali metals.

A lithium battery is what?

The most effective of them allows migration of a lithium cation, Li +, between the anode and the cathode, such as LiCoO 2, using a conducting polymer without a solvent. Cell phones, laptops, and other electronics frequently use smaller rechargeable lithium batteries.

To know more about lithium visit:

https://brainly.com/question/1439744

#SPJ1

Answer:

because H (hydrogen) is very reactive with other elements

Explanation:

Answer:

55,000,000

Explanation:

550 hectometers [hm] = 55,000,000 millimeters [mm]

Chromosomes contain many genes, and genes are instructions for producing proteins.

Chromosomes are thread-like objects that are found in the nucleus (core) of cells. One chromosome is made up of one protein and one DNA molecule. Different chromosome sizes can be packed together into a nucleus thanks to proteins called histones. Our chromosomes would be as tall as ours without them. The exact instructions needed by your cells to create a distinct you are provided by your chromosomes.

There should be 23 pairs of chromosomes in humans (46 total). Chromosomes are divided into one pair of sex chromosomes and 22 numbered pairs (autosomes) (X and Y). You receive a pair of chromosomes, one from each parent. The building blocks of your body are your genes. The instructions to produce proteins are provided by some genes. Your body receives instructions from proteins about the kinds of physical traits you ought to have, such as your hair and eye colour. Some genes produce RNA that performs additional functions.

Hence, genetic information is translated into protein based on need.

To know more about Genome.

https://brainly.com/question/29482089

#SPJ4

Answer:

Thorium

Explanation:

I hope it's correct ;))

Trigonal pyramidal molecular geometry

sp3 hybridization

sp³ - 4 p

There is some information missing. This, I believe, is the original question.

What are the electron-pair and molecular geometries of NBr3? What exactly is nitrogen atom hybridization? What orbitals on N and Br overlap to form these elements' bonds?

The overlap of the __ hybrid orbitals on nitrogen with the __ orbitals on Br forms the N-Br bonds.

The central atom of nitrogen is surrounded by four electron domains. The corresponding electron-pair geometry, according to VESPR, is tetrahedral.

Three of these four electron domains are covalent bonds with Br and one is a lone pair. The corresponding molecular geometry, according to VESPR, is trigonal pyramidal.

The nitrogen atom has a 1 s orbital and a

To learn more about geometry please click on below link

https://brainly.com/question/18612295

#SPJ4

Answer:

Gas and Liquids

Explanation: