Help me please
Will give brainliest if correct
(No links or spam)

Answer:

pH = 5.5 and it is an acid

Explanation:

Fr the question given above, the following data were obtained:

poH = 8.5

pH =?

pH + pOH = 14

pH + 8.5 = 14

Collect like terms

pH = 14 – 8.5

pH = 5.5

pH scale reads as follow:

0 to 6 => Acidic

7 => Neutral

8 to 14 => Basic

With the above pH scale, we can conclude that the solution with pH 5.5 is acidic.

The molarity of the solution will be:

B. 1.5 M, this can be calculated on adding the values of V and n in molarity formula.

It is defined as the ratio of number of moles of solute by the Volume of the solution in liters.

It is given by:

Molarity =  n/ V

What information do we have?

Volume = 5L

Moles of NaOH = 7.5 moles

On substituting the values

M= n/V

M= 7.5 moles / 5L

M= 1.5 M

Thus, the molarity of the solution is 1.5 M.

Hence, option B is correct.

Find more information about molarity here:

brainly.com/question/17138838

Answer:

Explanation:

Option A Rocks can change from one type to another through the rock cycle is the correct answer

Answer:

It does not disintegrate at high temperature

Explanation:

Because of its lower smoke point, lower saturated fat and higher unsaturated fats, are considered best for higher temperature tolerance.

It is so because olive oil unlike normal oils with low smoke point will not disintegrate at high temperature and hence it can be used for deep frying

Answer:

0.1056 mole

Explanation:

As Sally knows that the charge on the metal ion is n = +2

[tex]$MCl_n=MCl_2$[/tex]

In that compartment [tex]$[M^{n+}]=[m^{2+}]=8.279 \ M$[/tex]

The volume of the [tex]$MCl_n$[/tex] taken in that compartment = 6.380 mL

So, the number of moles of [tex]$M^{2+} = 8.279 \times 6.380$[/tex]

                                                      = 52.82 m mol

                                                      = 0.05280 mol

[tex]$MCl_n \rightarrow M^{n+}+nCl^-$[/tex]

But n = 2

Therefore, moles of [tex]$Cl^-$[/tex] = 2 x moles of [tex]$M^{n+}$[/tex]

                                       = 2 x 0.05282

                                       = 0.1056 mole

Answer:

Option E

Deuterium has one more neutron than hydrogen

Explanation:

Deuterium is an isotope of Hydrogen and hence there will variation in the number of neutron

Hydrogen has 0 neutron

Deuterium has 1 neutron and

Tritium has 2 neutron

Thus option E is correct

In the universe, there are approximately 26 deuterium atoms for every million hydrogen atoms. Deuterium has one more neutron than hydrogen.

The correct option is E.

Deuterium is a stable isotope of hydrogen, whose atomic weight is 2.014.

It is also called heavy hydrogen, and it contains one neutron and one proton.

In nuclear fusion reactors, deuterium is employed as a tracer, while in heavy water moderated fission reactors, it is utilized to slow down neutrons.

Thus, the correct option is E.

Learn more about deuterium

https://brainly.com/question/3845553

Answer:

A Li2O

Explanation:

Li has a 1+ charge and O has a 2- charge so to balance the charges there needs to be 2 Li for every 1 O

The product forms from the synthesis reaction between lithium (Li)and oxygen (O) is Li₂O. The correct option is A.

Synthesis reaction is the reaction when two or more products combine to form a single product.

An example of a synthesis reaction is the combination of sodium (Na) and chlorine (Cl) to produce sodium chloride (NaCl).

Thus, the correct option is A. Li2O.

Learn more about synthesis reaction

https://brainly.com/question/24936069

#SPJ2

Explanation:

2 or 4 does are the most reasonable

Answer:

I believe its D - four sp3 orbitals

Explanation:

Edg: 2021

Answer: you would have to remove 80 calories from 1 g of pure water at the freezing point, 0˚ C, to convert it to 1 g of ice at 0˚ C.                                              Explanation:However, 540 calories of energy are required to convert that 1 g of water at 100˚ C to 1 g of water vapor at 100˚ C. This is called the latent heat of vaporization. On the other hand, you would have to remove 80 calories from 1 g of pure water at the freezing point, 0˚ C, to convert it to 1 g of ice at 0˚ C.

Answer:

KI

Explanation:

K is 1+  & I is 1- so we need 1 of each to balance out the compound.

I think D is your answer

Answer:

The parents are green and the children are green.

Explanation:

They all have the green recessive (y). So, the parents are green and the children are green.

Answer:

[tex]OH^-(aq)+H^+(aq)\rightarrow H_2O(l)[/tex]

Explanation:

Hello there!

In this case, according to the given reactants, it is firstly necessary to set up the complete molecular reaction:

[tex]NH_4OH(aq)+HClO_4(aq)\rightarrow NH_4ClO_4(aq)+H_2O(l)[/tex]

Now, by knowing that ionic species are able to ionize, we are able to write the complete ionic equation:

[tex]NH_4^++OH^-+H^++ClO_4^-\rightarrow NH_4^++ClO_4^-+H_2O(l)[/tex]

Whereas ammonium and chlorate ions are spectator ions because they remain the same on both sides of the equation. Therefore the total or net ionic equation would be:

[tex]OH^-(aq)+H^+(aq)\rightarrow H_2O(l)[/tex]

Best regards!

Answer:

Light is absorbed, which produces characteristic lines.

Lines are dark on a visible light background.

Lines are produced by electrons being excited.

Explanation:

Edg

The characteristics of absorption spectra light is absorbed, which produces characteristic lines, lines are dark on a visible light background and Lines are produced by electrons being excited.

The term "absorption spectroscopy" applies to spectroscopic methods that assess how much radiation interacts with a sample and is absorbed as a proportion of frequency or wavelength. The sample takes in photons, meaning energy, from the emitting field.

The electron would be a subatomic particle with a negative one fundamental charge electric charge. Due to their lack of components or substructure, electrons, which have become part of the lepton particle family's first generation, could be typically regarded to be elementary particles.

The percentage of incoming electromagnetic energy that a material absorbs across a variety of frequencies is displayed in the material's absorption spectrum. In a way, an emission spectrum would be the converse of an absorption spectrum.

To know more about absorption spectrum and electrons

https://brainly.com/question/1255220

#SPJ2

Answer: c= 1.99·10^-3 mol/l

Explanation: molar mass of oxalis acid is M=126.068 g/mol.

V= 0.25 l and mass is 0.063 g

Amount of substance n = m/ M = cV

Molality c = m/MV

Answer:

3 m

Explanation:

We'll begin by converting 99.9 MHz to Hz. This can be obtained as follow:

1 MHz = 10⁶ Hz

Therefore,

99.9 MHz = 99.9 MHz × 10⁶ Hz / 1 MHz

99.9 MHz = 99.9×10⁶ Hz

Finally, we shall determine the wavelength. This can be obtained as follow:

Frequency (f) = 99.9×10⁶ Hz

Velocity (v) = 3×10⁸ m/s

Wavelength (λ) =?

Velocity = wavelength × frequency

v = λf

3×10⁸ = λ × 99.9×10⁶

Divide both side by 99.9×10⁶

λ = 3×10⁸ / 99.9×10⁶

λ = 3 m

Thus, the wavelength of the electromagnetic wave is 3 m.

Answer:

[tex]T_{f,sol}=-15.0\°C[/tex]

Explanation:

Hello there!

In this case, for these problem about the colligative property of freezing point depression, it is possible set up the following equation:

[tex]T_{f,sol}-T_{f,water}=-i*m*Kf[/tex]

Whereas the van't Hoff's factor, i, is 2 since KCl is ionized in two ions (K+ and Cl-); and the molality (m) of the solution is computed by:

[tex]m=\frac{75g*\frac{1mol}{74.55g} }{250g*\frac{1kg}{1000g} } \\\\m=4.02mol/kg[/tex]

Thus, since the freezing point of water (ice) is 0°C, we obtain the following freezing point of the solution by plugging in:

[tex]T_{f,sol}=-(2)(4.02mol/kg)(1.86\°C/mol*kg)\\\\T_{f,sol}=-15.0\°C[/tex]

Best regards!

Answer:

all of the above

Explanation:

i got the answer right on cK-12

Answer:

Explanation:

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule

Answer:

Intermolecular forces are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between atoms and other types of neighboring particles, e.g. atoms or ions.

Explanation:

Hope this helped Mark BRAINLIEST!!!

Answer:

The number of particles in the 41.8g sample of Bismuth is 12.044 × 10²³

Answer:

b.

Explanation:

Answer:

Batteries convert chemical energy into electrical energy. Polarization is a defect that occurs in simple electric cells due to the accumulation of hydrogen gas around the positive electrode. In simple cells, hydrogen gas is evolved as a result of chemical reactions taking place inside the cell

Answer:

The activation energy needed to form cubic diamond is much greater than the activation energy needed to form hexagonal diamond.

Explanation:

The activation energy refers to the minimum energy that reacting species must possess before they can undergo a particular chemical reaction.

This implies that if species do not possess the activation energy, they hardly undergo a given reaction. The activation energy is the barrier between reactants and products.

Hence, a reaction that has a very high activation energy occurs slowly or may not even occur. The activation energy needed to form cubic diamond is much greater than the activation energy needed to form hexagonal diamond hence the synthetic process produces hexagonal diamond and not the more thermodynamically stable cubic diamond.

Answer:

ooooo okkk

Explanation:

so if there was acid rain some problems would be like finding food and shelter. the world would go even weirder then it is now lol. but our food would be gone and we would need to adaot and find acid proof shelter. many people would be lost and ya our water would also get poisened ands such

Answer:

Contanimation of food and water sources; this is even more serious because all life is interconnected, and the negative effects of acid rain therefore spread throughout; respiratory problems could arise in people; negative effects on infrastructure (corrosion)

Answer:Chemical formula F −

Molar mass 18.998403163 g·mol−1

Conjugate acid Hydrogen fluoride

Explanation:

Answer:

Signals from the A. Nervous system make the skeletal muscles move.

well i need points

Explanation:

thanks

Answer:

liquid

Explanation:

defiantly