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Answer:

the answer will be five

Explanation:

i got this question on a test and i got it right

Answer:

#7 is D. #4 is B. #5 is 13 #6 is C

Answer:

okokokokokokokok I will answer in just a moment

Explanation:

Answer:

Number: 4

Charge: +2

Element: Beryllium

I hope this helps!! :)

Answer:

Hydrogen bond strengths range from 4 kJ to 50 kJ per mole of hydrogen bonds. In molecules containing N-H, O-H or F-H bonds, the large difference in electronegativity between the H atom and the N, O or F atom leads to a highly polar covalent bond (i.e., a bond dipole).

Explanation:

Answer:

Charged objects have an imbalance of charge - either more negative electrons than positive protons or vice versa. And neutral objects have a balance of charge - equal numbers of protons and electrons. ... Their presence (or absence) will have no direct bearing upon whether an object is charged or uncharged.

Answer:

ΔG =   18KJ/mol

Explanation:

Given data:

ΔS = 0.09 Kj/mol.K

ΔH = 27 KJ/mol

Temperature  = 100 K

ΔG = ?

Solution:

Formula:

ΔG = ΔH - TΔS

ΔS = entropy

ΔH = enthalpy

by putting values,

ΔG =  27 KJ/mol - 100K(0.09 Kj/mol.K)

ΔG =  27 KJ/mol - 9 KJ/mol

ΔG =   18KJ/mol

Answer:

ΔG = 18kJ/mol

Explanation:

took the quiz on ap ex and it was correct

Answer:

sediments consist of rocks and minerals, as well as the remains of plants and animals

Explanation:

Answer:

7 seven

Explanation:

because when C7H15 is heated 7molecules of atoms are displaced

Answer:

11.43 cm

Explanation:

Answer:

A. The sum of the voltages of the half-reactions is positive.

Explanation:

correct on  a p e x

Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

Redox reactions are the reactions in which reduction reaction and oxidation reaction happens simultaneously. The term ‘redox’ is a short form of reduction-oxidation. All the redox reactions can be broken down into two different processes: a reduction process and an oxidation process.

The loss of electrons and the corresponding increase in the oxidation state of a given reactant is called oxidation. The gain of electrons and the corresponding decrease in the oxidation state of a reactant is called reduction.

For example-

H₂ + F₂ → 2HF

Hydrogen is added to Fluorine gas so Fluorine has been reduced but Hydrogen has been oxidised.

Therefore, Among the following redox conditions those will produce a spontaneous reaction is The sum of the voltages of the half-reactions is positive.

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Explanation:

Family is usually considered to be the most important agent of socialization. They not only teach us how to care for ourselves, but also give us our first system of values, norms, and beliefs. ... Another agent of socialization that relates to school is our peer group.

Answer:

letter A is the answer

Explanation:

At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.

Answer:

See explanation

Explanation:

The process of electroplating an iron key with silver involves electrolysis.

The anode is a silver rod, the electrolyte is AgNO3 solution while the cathode is the iron key. A battery is connected to provide energy to drive the non-spontaneous electrochemical reaction.

Electrons flow from the anode to the cathode. Silver ions from the silver rod replenishes the silver that is deposited on the iron key in order to continue the electrolytic process.

The silver anode is therefore depleted in mass while the iron key increases in mass.

Answer:

1.58 102 mol

Explanation:

I just looked it up on Quizlet.

1.58 102 moles of NaOH must be dissolved in 1.00 L of water to make NaOH (aq) with a pH of 12.2.

One mole of any substance weighs about the same as the molecular mass of that substance. Hence, the number of moles of sodium hydroxide contained in 160 g of it is 4 moles.

Number Of Moles Formula

1 The formula for the number of moles formula is expressed as.

Given.

2 The number of moles formula is.

3 The number of moles = Mass of substance / Mass of one mole.

4 Number of moles = 95 / 86.94.

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Explanation:

Methane is a gas at room temperature but methanol is a liquid because in methane there's London dispersion intermolecular force but in methanol there's H-bond and London dispersion force. H-bond is more stronger than London dispersion force. So, it increases the boiling point of methanol that's why methane is gas at room temperature due to weak attraction of London dispersion force and methanol is liquid.

Methanol has a higher boiling point than methane due to stronger intermolecular forces (IMFs), or attraction between individual molecules. This makes its molecules more difficult to separate, requiring more energy and resulting in a higher boiling point.

An intermolecular force is a force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles, such as atoms or ions.

Intermolecular forces are classified into five types namely,

Between ions and polar dipole molecules, ion-dipole forces exist.

Since of stronger intermolecular forces (IMFs), or attraction between individual molecules, methanol has a higher boiling point than methane.

This makes it more difficult to separate its molecules, requiring more energy and resulting in a higher boiling point.

Thus, this is the reason of using types of intermolecular forces present.

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Answer: 10 grams

Explanation: Original sample is 80 gram and every three days half of its composition decays so 80 down to 40 in the first 3 days, 20 in the next three days, and  10 in the last three days

Answer:

Explanation:

the vector sum of all such forces which equals zero for an object at rest. CASE 1: Considering a basketball of weight 1kg, if it has been kept stationary on the ground, there are two forces acting on it. These are it's weight (gravity) and equal and opposite force from the ground (normal reaction).

Answer:

The net force is zero. :)

Explanation:

Answer:

c. iron I hope it helped.....

Answer:

I think soon mercury ..........

Answer:

Explanation:

I just had this question on my test

Answer:

Explanation:

The earth is comprised of denser materials such as iron and nickel and other siderophile elements in the core and silicate materials in the mantle. The temperature at the core of the earth is extremely high that generates a force, that allows the molten materials (magma) to rise up from the bottom of the mantle towards the crust, in the form of convection currents. This upward movement of magma forces the lithospheric plates to move.

Thus, magma rises from the bottom of the mantle towards the crust.

Answer:

electrons are negatively charged and are located in the electron cloud (outside the nucleus)

Answer:

The answer is option 3.

Explanation:

Electrons are negatively charged and is located outside the nuclues.

Protons are positively charged, neutrons are neutral and both are located inside the nucleus.

Answer:

2N2 + 5O2 + 2H2O → 4HNO3

Explanation:

Dinitrogen - N2

N₂ Nitrogen Gas Nitrogen Diazyne

Molar Mass of N2 Bond Polarity of N2

Dioxygen - O2

O₂ Oxygen Molecular Oxygen Diatomic Oxygen Triplet Oxygen Oxygen Gas Liquid Oxygen LOx

Molar Mass of O2 Bond Polarity of O2

Water - H2O

Dihydrogen Monoxide Dihydridooxygen [OH2] HOH Hydrogen Hydroxide Dihydrogen Oxide Oxidane Hydrogen Oxide

Molar Mass of H2O Oxidation State of H2O

Products

Nitric Acid - HNO3

Spirit Of Niter Fuming Nitric Acid Aqua Fortis Engravers Acid Hydrogen Nitrate HONO2 Peroxynitrous Acid [NO(OOH)]

Molar Mass of HNO3 Oxidation State of HNO3

Answer:

Molecular formula = C₈H₁₆

Explanation:

Given data:

Percentage of hydrogen = 14.4%

Percentage of carbon = 85.6%

Molecular formula = ?

Molecular weight = 112 g/mol

Solution:

Number of gram atoms of H = 14.4/ 1.01 = 14.26

Number of gram atoms of C = 85.6/ 12 = 7.13

Atomic ratio:

            C                      :              H        

           7.13/7.13            :           14.26/7.13    

            1                      :                 2          

C : H = 1 : 2

Empirical formula is CH₂

Molecular formula:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

n = 112 / 14

n = 8

Molecular formula = n (empirical formula)

Molecular formula = 8 (CH₂)

Molecular formula = C₈H₁₆

Answer:

True

Explanation:

Answer:

True ;)

Explanation:

Answer:

A. Al(s)

Explanation:

Answer:

Radiation

Explanation:

Answer:

−0.60205999

Explanation: