What do you think it is?

The pressure of the dry gas : 687.5 torr

Dalton's law of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases  

Can be formulated:  

P tot = P1 + P2 + P3 ....  

The partial pressure is the pressure of each gas in a mixture  

Since the gas mixture consists of He and H₂O :

P tot=P He + P H₂O

[tex]\tt 705=P~He+17.5\\\\P~He=705-17.5=687.5~torr[/tex]

Answer:

The orbitals 3f and 2d cannot exist.

Explanation:

Hello!

In this case, considering the attached picture in which you find each energy level with the corresponding number of subshells, it is possible to infer level one has s subshell only, level 2 s and p, level 3 has s, p and d and from level 4 to 7 have s, p, d f, therefore, the orbitals 3f and 2d cannot exist.

Best regards!

Answer:

Van der waals forces

Explanation:

I just know

Answer:

Now, what happens if we turn the room thermostat up to 80 degrees F? Looking at your Capacity of Saturated Air table, you can see that as air temperatures rise, there is an increase in the ability of the air to hold moisture. At 80 degrees F the capacity of air increases to where it can hold 21.537 g/kg of water vapor.

Explanation:

Answer: At 80 degrees F the capacity of air increases to where it can hold 21.537 g/kg of water vapor.

Explanation:

Answer:

the volume delivered by the pipette = 22.32 mL

Explanation:

To calculate this, let us first note that the density of water relates it weight and its volume (density = mass ÷ volume), hence we are going to use density to determine the volume.

Density of water = mass/volume = 0.997 g/ mL

mass = 22.25g

Density = 0.997g/mL

volume = ?

[tex]density = \frac{mass}{volume}\\\therefore volume = \frac{mass}{density}\\volume = \frac{22.25}{0.997}\\volume = 22.32\ mL[/tex]

∴ the volume delivered by the pipette = 22.32 mL

Please note that this calculation is based on the fact that the weight of the empty flask has been determined and canceled out.

Answer:

H

Explanation:

Explanation:

It will not float on water

Substances with their densities less than that of water usually float on it and those with their densities greater than that of water will sink into it.

From the question the density of glass is 2.8 g/cm³ and this is greater than the density of water which is 1 g/cm³. Therefore glass will not float on water.

Hope this helps you

Answer:

3.1 × 10⁻⁵

Explanation:

The pH of a 0.53 M solution of 3-hydroxypropanoic acid (HC₃H₅O₃) is measured to be 2.39. Calculate the acid dissociation constant of 3-hydroxypropanoic acid. Be sure your answer has the correct number of significant digits.

Step 1: Given data

Step 2: Write the acid dissociation reaction

3-hydroxypropanoic acid is a weak acid that dissociates according to the following equation.

HC₃H₅O₃(aq) ⇄ C₃H₅O₃⁻(aq) + H⁺(aq)

Step 3: Calculate the concentration of H⁺

We will use the definition of pH.

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog -2.39 = 4.07 × 10⁻³ M

Step 4: Calculate the acid dissociation constant (Ka) of 3-hydroxypropanoic acid

We will use the following expression.

Ka = [H⁺]² / Ca

Ka = (4.07 × 10⁻³)² / 0.53

Ka = 3.1 × 10⁻⁵

Answer:

A new substance was forming

Explanation:

Answer:

1. Chloride ion

2. Metal ion

3. The same as a sample with the identical metal ion.

Explanation: I Just took the quiz on Edge 2021

Answer:

instrumental music is used in festivals, rituals, etc.

Explanation:

The decay reaction of Carbon-14 which releases Beta particles, resulting in the element Nitrogen-14

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

Carbon-14 emits beta β ₋₁e⁰ particles , so the atomic number increases by 1, the mass number remains the same

Reaction

[tex]\tt \large{\boxed{\bold{_6^{14}C\rightarrow _7^{14}N+_{-1}^0e}}[/tex]

Answer:

45 m/s north

Explanation:

Edge 2020

Answer: (B) 45 m/s north

Explanation: right on edge 2020 (so basically the same reason as person above)

Taking into account the constitution of an atom, an atom is neutral because it has the same number of protons as it has electrons.

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.

Every atom consists of a nucleus in which neutrons and protons meet and energy levels where electrons are located.

The neutron is an electrically neutral subatomic particle, while the proton has a positive electrical charge. Electrons have a negative charge, move around the nucleus at different energy levels and are attracted to protons, positive in the atom through electromagnetic force.

An atom is considered electrically neutral when it has the same number of positive and negative charges. That is, an electrically neutral atom has the same number of protons (with a positive charge) and electrons (with a negative charge).

In summary, an atom is neutral because it has the same number of protons as it has electrons.

Learn more about atom electrically neutral:

brainly.com/question/1814899

brainly.com/question/2449569

#SPJ2

Answer:

mixture of hydrochloric and nitric acid can dissolve noble metals, such as gold and platinum.

Explanation:

Answer:

the pH of the solution after 20 mL HCl was added is 1.12

Option d) 1.12 is the correct answer

Explanation:

Firstly; number of mmols of NH₃ before addition of HCl = M x V = 0.25 x 20 = 5

Also number of mmols pf HCl added = M x V = 0.40 x 20 = 8

Number of mmols of NH₄Cl formed

= number of mmols of NH3 before addition of HCl = 5

Number of mmoles of HCl remained = 8 – 5 = 3

Therefore Total volume of solution = 20 + 20 = 40 mL

Molarity of HCl = 3 / 40 = 0.075 M

Molarity of NH₄Cl = 5 / 40 = 0.125 M

Therefore

Ka x Kb = 10⁻¹⁴

Ka x 1.8 x 10⁻⁵ = 10⁻¹⁴

Ka (NH₄Cl) = 5.56 x 10⁻¹⁰

[H+] from HCl = 0.075 M

[H+] from NH₄Cl = (Ka x C)^1/2

= (5.56 x 10⁻¹⁰ x 0.125)^1/2 = 8.34 x 10⁻⁶

Hence, [H+] from NH₄Cl is negligible.

pH = -log 0.075

pH = 1.12

Therefore the pH of the solution after 20 mL HCl was added is 1.12

Option d) 1.12 is the correct answer

Answer:

The correct Answer is A.

proof below <3

Answer:

a drink my guy

Explanation:

just frozen

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{8.30 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{8.3}{6.02} \\ = 1.3787...[/tex]

We have the final answer as

Hope this helps you

Answer:

b

Explanation:

Electrons have negative charges and Protons have positive.

you can remember this by (Pro)ton = (Pos)itive

Answer:

it B 114 on edge 2020

Explanation:

UwU

Answer:

it B 114

Explanation:

Answer:

18 oxygen atoms

Explanation:

in order to from the 6 molecules carbon dioxide and 6 molecules of water you will have a total of 18 oxygen atoms

Answer:

C. commensalism.

Explanation:

Here is the answer

Answer: THE ANSWER IS A

Explanation:

Answer:

199920J

Explanation:

Given parameters:

Mass of steam  = 85g

Unknown:

Heat released when the liquid is condensed  = ?

Solution:

The heat released by the substance is given as;

         H  = mL

H is the heat released

m is the mass

L is the latent heat of steam  = 2352J/g

Heat released  = 85 x 2352  = 199920J

Answer:

Cell growth usually refers to cell proliferation, the increase in cell numbers that occurs through repeated cell division. Cell growth can also refer to the enlargement of cell volume, which can take place in the absence of cell division. As living things grow, some cells die or become damaged and need replacements. Some single-celled organisms use a type of mitosis as their only form of reproduction. In multicellular organisms, cell division allows individuals to grow and change by expanding the number of total cells.

Hope this helps!!!

Answer:

1. synthesis

2. single displacement

3.double displacement

4.double displacement

Explanation:

1. here Mangananes (iv) oxide further reacts with oxygen to form Manganese (iii) oxide , two reactants making one product .

2. Carbon replaces aluminium from aluminium oxide to make pure aluminium and carbon monoxide and carbon dioxide.

3. sodium replaces barium to make sodium acetate , barium replaces sodium to make barium carbonate ( precipitate )

4. potassium replaces Hydrogen to produce potassium bromide, while hydrogen and hydroxide ions combine to make water .

Answer: :)

Explanation:

In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom

Answer:

In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.

Explanation: