Which of the following has the correct name for either the acid or base

Answer:

Using the periodic table of the elements to find atomic weights, we find that hydrogen has an atomic weight of 1, and oxygen's is 16. In order to calculate the molecular weight of one water molecule, we add the contributions from each atom; that is, 2(1) + 1(16) = 18 grams/mole.

Explanation:

hope this helped

Answer:

The maggots had traces of this man in them and the entomologists found out who he was just by using the DNA in the maggots.

Explanation:

Answer:

She shares how there were maggots found in an empty house and found cocaine on them. By this, they knew that the maggots had been feeding off human remains.  They were then able to run more tests and find DNA that were on these maggots and they were able to discover who the victim was.

Answer:

[tex]\%N=28.6\%\\\\\%O=71.4\%[/tex]

Explanation:

Hello there!

In this case, according to the given information, it is possible to calculate the percent compositions, by dividing the mass of each element by the sum of the masses of the elements as shown below:

[tex]\%N=\frac{m_N}{m_N+m_O} *100\%\\\\\%O=\frac{m_O}{m_N+m_O}*100\%[/tex]

Thus, we plug in the given masses to obtain:

[tex]\%N=\frac{10.0g}{10.0g+25.00g} *100\%=28.6\%\\\\\%O=\frac{25.00g}{10.0g+25.00g}*100\% =71.4\%[/tex]

Regards!

Answer:

true

Explanation:

A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor. ... The products of the combustion of hydrocarbons are carbon dioxide and water.

Answer:

7.3125grams

Explanation:

Molarity is the measure of the molar concentration of a solution. It can be calculated using the formula as follows:

Molarity = number of moles (n) ÷ volume (V)

Based on the information given,

Molarity = 1.25 M

Volume = 100 mL = 100/1000 = 0.1 L

Molarity = n/V

1.25 = n/0.1

n = 1.25 × 0.1

n = 0.125mol

Using the below formula to calculate the mass of NaCl;

mole = mass/molar mass

Molar mass of NaCl = 23 + 35.5 = 58.5g/mol

0.125 = mass/58.5

mass = 0.125 × 58.5

mass = 7.3125 grams

Answer:

electrons are located outside of the atoms nucleus

Answer:

a e i o u

Explanation:

a e i o u

Answer:

3.4g/dm³

Explanation:

Mass concentration = mass of solute/volume of solution

According to this question;

Mass of rubidium = 8.5g

Volume of rubidium hydroxide solution = 2.5dm³

Mass conc. = 8.5/2.5

Mass conc. 3.4g/dm³.

Answer:

B

Explanation:

When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).

MARK AS BRAINLEST!!

Answer:

Explanation:

The first thing we need to know is that the amino acid of tyrosine has an aromatic ring within its structure.

Also, recall that aromatics hydrocarbons are considered to be unsaturated and non-polar.

So, since like dissolve like. Then, The non-polar character of tyrosine is enhanced by its aromatic ring. As a result, Tyrosine amino acid is much more soluble in less polar solvents like methanol and ethanol than in moderate highly polar water.

From the given information:

Since water is a very polar solvent, and tyrosine amino acid is not particularly polar, it is just barely soluble in it.

In addition to the aforementioned, peptides are strongly polar in nature. However, as the amount of tyrosine amino acids in a peptide increases, the region of the non-polar portion of the peptide increases (owing to the rise of the aromatic ring), and thus the non-polar value of the peptide will also rise. And this non-polar nature of peptide will make them more soluble in non-polar solvent and decrease its solubility in water (because water is polar in nature). And since peptides are non-polar, they would be more soluble in non-polar solvents and have less solubility in water.

Answer:

1 Calcium, 2 Nitrogen, and 4 oxygen

Explanation:

there is no number before of after Ca(calcium), so there is only 1. No(nitrogen) has no number next to it so there would be only 1 of it,but there is a 2 after the parenthesis so there is 2 nitrogen (2*1=2). O(oxygen) has a two next to it so there would be only 2 oxygen, but there is a two after the parenthesis so instead there are 4 oxygen because 2*2=4. Hope this helped you <3

Answer:

A current runs through a loop of wire in a magnet field; the force from the magnet causes the wire to rotate

Explanation:

https://www.jameco.com/Jameco/workshop/ProductNews/motor-buyers-guide.html#:~:text=Electric%20motors%20work%20by%20converting,or%20direct%20(DC)%20current.&text=Electric%20Motors%20have%20an%20array%20of%20applications.

its hard to explain simply because i dont have a mastery over the subject yet myself, but this article should help explain it

if you have any questions, leave them in the comments and i will try to answer them, if this helped, pls give brainliest

Answer:

c

Explanation:

Answer:

1 - Salts required  that can be compared directly, using Ksp values, to estimate solubilities for copper (II) sulfide are - [tex]CaSO_3[/tex] (Option b) ,[tex]BaCrO_4[/tex] (Option c) and [tex]CaS[/tex] (Option d)

2 - Salts  that can be compared directly, using Ksp values, to estimate solubilities for zinc hydroxide are - [tex]Mg(OH)_2[/tex] (Option a)

Explanation:

[tex]K_s_p[/tex] values can be used to compare the solubility of salts that produce ions in a 1:1 ratio.

Because the salts [tex]CaSO_3[/tex] , [tex]BaCrO_4[/tex] and [tex]CaS[/tex]  have a 1:1 ion ratio, the solubilities of options b, c, and d can be compared to salt 1.

[tex]K_s_p[/tex] Values can be used to compare the solubility of salts that produce ions in a 1:2 or 2:1 ratio.

  2. [tex]Zn(OH)_2[/tex] dissociates into ions in ratio 1:2 .

Because the ions in the salt [tex]Mg(OH)_2[/tex] are in a 1:2 ratio, the solubility of salt 2 can be compared to that of salt 'a'.

Hence , Salt 1 is matched with options b , c , d.

              Salt 2 is matched with option a.

Answer:

Carboxylic acid is an organic acid containing a carboxyl group. The simplest examples are methanoic (or formic) acid and ethanoic (or acetic) acid. It is  used in the production of polymers, biopolymers, coatings, adhesives, and pharmaceutical drugs. They also can be used as solvents, food additives, antimicrobials, and flavorings.

Explanation:

Hope that helps.

Answer:

The given statement - The main criterion for sigma bond formation is that the two bonded atoms have valence orbitals with lobes that point directly at each other along the line between the two nuclei , is True.

Explanation:

The above statement is correct , because the sigma bond is produced by the head on overlapping, the orbitals should all point in the same direction.

SIGMA BONDS - Sigma bonds (bonds) are the strongest type of covalent chemical bond in chemistry. They're made up of atomic orbitals that collide head-on. For diatomic molecules, sigma bonding is best characterized using the language and tools of symmetry groups.

Head-on overlapping of atomic orbitals produces sigma bonds. The concept of sigma bonding is expanded to include bonding interactions where a single lobe of one orbital overlaps with a single lobe of another. Propane, for example, is made up of ten sigma bonds, one for each of the two CC bonds and one for each of the eight CH bonds.

Hence , the answer is true .

Answer:

Partial lunar eclipse.

Explanation:

A lunar eclipse is a cosmological event by which, in the presence of the Earth between the Sun and the Moon, the latter does not receive the light of the Sun in the totality of its visible face, with which a part (or the totality ) of her is in the dark.

Thus, if the lunar eclipse implies an absence of sunlight in the entire lunar surface, the eclipse will be total, while if the eclipse implies an absence of light only in part, the eclipse will be partial (which is the most common event).

Answer:

A. The actual number of atoms in a molecule

Explanation:

Molecular formula is simply defined as a type of chemical formula that describes the type and number of atoms present in a single molecule of a compound.

Looking at the options, the correct answer is option A.

Answer:

a

Explanation:

Solution :

a). [tex]$SO_3$[/tex]

  This compound is known as sulfur trioxide.

  The molecular shape of sulfur trioxide is trigonal planer.

   And the bond angle is 120°.

b). [tex]$N_2O$[/tex]

   This compound is known as Nitrous oxide. Here, nitrogen is in the center.     There is no lone pair around the nitrogen atom and it forms two sigma bonds with the other two atoms.

 It is linear in shape.

  The bond angle between them is 180°.

c). [tex]$CH_2Cl_{2}$[/tex]

  This compound is known as the Dichloromethane.

   The molecular shape of the compound is tetrahedral.

   The bond angles is 120°

Answer:

CuSO₄(aq) + 2KOH (aq) —> Cu(OH)₂(s) + K₂SO₄(aq)

Explanation:

CuSO₄ + 2KOH —> Cu(OH)₂ + K₂SO₄

To know the state of each compounds, we shall determine the complete ionic equation. This can be obtained as follow:

In solution, CuSO₄ and KOH will dissociate as follow:

CuSO₄(aq) —> Cu²⁺(aq) + SO₄²¯(aq)

KOH (aq) —> K⁺ (aq) + OH¯(aq)

CuSO₄(aq) + KOH (aq) —>

Cu²⁺(aq) + SO₄²¯(aq) + 2K⁺(aq) + 2OH¯(aq) —> Cu(OH)₂(s) + 2K⁺(aq) + SO₄²¯(aq)

Note: Cu(OH)₂ is insoluble in water.

Therefore, the elemental equation is:

CuSO₄(aq) + 2KOH (aq) —> Cu(OH)₂(s) + K₂SO₄(aq)

Answer:

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Answer:

S = 21.92 %

F = 78.08 %

Explanation:

To find the percent composition of each element in SF6, we must find the molar mass of SF6 first.

Molar mass of SF6 = 32 + 19(6)

= 32 + 114

= 146g/mol

mass of Sulphur (S) in SF6 = 32g

mass of Fluorine (F) in SF6 = 114g

Percent composition = mass of element/molar mass of compound × 100

- % composition of S = 32/146 × 100 = 21.92%.

- % composition of F = 114/146 × 100 = 78.08%.

Answer:

Mg

Explanation:

I think Mg is correct not too sure tho

Answer:

1.95cm x 1.95cm x 1.95cm

Explanation:

20.00g / 2.70g/mL = 7.41 mL = 7.41 cm^3

∛7.41 = 1.95cm

Answer:

The solubility of gases decreases with pressure as that of solids and liquids is not affected.

Answer:

Lystrosaurus

Explanation:

Lystrosaurus, a vegetarian dinosaur whose name apparently means "trowel dinosaur," inhabited the area in the earliest Triassic period, 220 million years. It is believed to be have been herbivorous which developed to be around one meter long, with an average build similar to a pig. Lystrosaurus skeletons have only been discovered in Antarctic peninsula, India, and Africa.

Answer:

alkali metals

Explanation:

:)

Answer:

pH = 12.08

Explanation:

First we calculate how many moles of each substance were added, using the given volume and concentration:

As HBr is a strong acid, it dissociates completely into H⁺ and Br⁻ species. Conversely, KOH dissociates completely into OH⁻ and K⁺ species.

As there are more OH⁻ moles than H⁺ moles (5.55 vs 3.75), we calculate how many OH⁻ moles remain after the reaction:

With that number of moles and the volume of the mixture, we calculate [OH⁻]:

With [OH⁻], we calculate the pOH:

With the pOH, we calculate the pH: