which one represents an element

Answer:

Ps5

Explanation:

Answer:

well the answer to that is  climate change

Explanation:

because with climate change the temperature and hot and cold it is depending on where you live

Answer:

carboxyl group

Explanation:

Answer:

A EDGE 2022

Explanation:

Answer:

Atomic number

Explanation:

Because atomic number is unique for each element and never changes

Beryllium with 2 valence electrons would be able to pair with Se with 6 valence electrons. Option D.

Atoms form bonds with one another based on the number of valence electrons present in their outermost shell. Electrons are either donated, received, or paired.

In order for bonds to form, the participating atoms try to assume an octet structure, In other words, each atom tries to have a completely filled outermost shell. Thus, atoms with only a few electrons in their outermost shells readily donate them while those with just a few electrons remaining to fill up their outermost shell readily accept them.

Be has 2 outermost electrons, Se has 6. Be will readily donate the 2 outermost electrons while Se will readily accept 2 electrons for completely filled shell.

More on formation of bonds can be found here: https://brainly.com/question/11539094

#SPJ1

Answer: The answer is B

Explanation: The arrow means produces it is also known as yields

Example: 2H2 + O2 → 2H2O

The arrow → means that it yields

Hope this was helpful

Compared to an atom as a whole, an atomic nucleus Is very tiny but has most of the mass. Correct answer: letter A.

Because atoms are composed of protons, neutrons and electrons. The protons and neutrons are found in the nucleus, which is very small compared to the atom as a whole. However, the protons and neutrons have much more mass than the electrons, so the nucleus has most of the mass of the atom.

An atom is the smallest unit of matter that can exist. Atoms are made up of three particles:

Atoms are the building blocks of all matter in the universe.

Learn more about the atom:

https://brainly.com/question/6258301

#SPJ4

Answer:

Where are the answer choices

?

Answer:

the person and the dog energy is at a 150 kg and the second answer is 50 speed

Explanation:

The correct answer is (c) - the volume increases 16 fold. Volume is inversely proportional to pressure.

As per Boyle's regulation, at a consistent temperature, the volume of a gas is contrarily corresponding to its tension. Thusly, on the off chance that the tension is diminished by a component of four, the volume of the gas will increment by an element of four (expecting that how much gas and the temperature stay steady).

Since the inquiry pose for the impact on the volume of 1 mol of an ideal gas, we can reason that choice (d) is wrong in light of the fact that the volume of the gas will change because of the adjustment of tension.

Likewise, choices (a), (b), and (e) are additionally wrong since they recommend a decline, increment, or change in the volume of the gas that isn't steady with the reverse connection among strain and volume depicted by Boyle's regulation.

In this manner, the right response is (c) - the volume increments 16 overlay. This implies that the volume of the gas will be multiple times the underlying volume when the strain is diminished by a variable of four, which is then duplicated by the underlying volume again in light of the fact that the inquiry pose for the volume of 1 mol of gas.

To learn more about pressure, volume and temperature, refer:

https://brainly.com/question/26986525

#SPJ4

The acid and base are the proton donor and acceptor pairs. The base-conjugate acid pair in the equation has been \(\rm NH_3/NH_4\).

The conjugate acid has been the proton donor in the reaction, while the conjugate base has been the proton acceptor in the reaction.

The given equation has been:

\(\rm NH_3\;+\;HNO_3\;\rightarrow\;NH_4\;+\;NO_3^-\)

The \(\rm NH_3\) group in the equation accepts the protons and has been converted to the \(\rm NH_4\). Thus, it has been the base.

The conjugate acid to the  \(\rm NH_3\) group in the equation that has been the proton donor has been \(\rm NH_4\).

Thus, the conjugate acid and base pair in the equation have been \(\rm NH_3/NH_4\). Thus, option A is correct.

Learn more about the conjugate base, here:

https://brainly.com/question/10468518

Answer:

A

Explanation:

The other guy was correct, but I wanted it to be easier for others to see

Explanation:

i think its B but i'm not fully sure (Correct)

Answer:

B.

Explanation:

Most elements' names end in the suffix -ium this practice started around the year 1800, with many elements discovered before that having a more common name however, some elements are more recently discovered and don't end in -ium because element name start with the latin name and then it give suffix to the element

The ium in helium can be thought of carrying the meaning 'derived from' with the hel part representing greek helios means sun it having being inferred that helium was present in sun atmosphere and the ium suffix is a latin suffix which forms abstract nouns, thus it is used to form chemical elements name from its naming origin

There are 81 elements that end in the suffix ium or um which is derived from the latin and it is denoted a metallic substances

Know more about elements

https://brainly.com/question/17488697

#SPJ1

Answer:

quartz (SiO2)n

Explanation:

Melting point is defined as the temperature or point at which the substances change its state from solid to liquid.

Quartz (SiO2)n has high melting point than O2 because Quartz (SiO2)n is found in the form of hard, crystalline mineral that is made up of silicon and oxygen atoms having strong covalent bonds between all the atoms. So, a lot of energy is required to break the bond between the atoms and it has a high melting point.

Hence, the correct answer is quartz (SiO2)n.

The molar mass of the unknown solute is 1.4375 g/mol or approximately 1.44 g/mol.

To determine the molar mass of the unknown solute, we can use the formula:

ΔTb = Kbp * m * i

where

ΔTb = boiling point elevation

Kbp = boiling point elevation constant

m = molality of the solution

i = van't Hoff factor.

In this case, we are given the following information:

ΔTb = 2.76°C

Kbp = 1.71 K/m

m = ?

i = 1 (since the unknown solute is a non-electrolyte)

To calculate the molality of the solution using the formula:

m = moles of solute/mass of solvent (in kg)

mass of solute = 5.97 g + 50.0 g = 55.97 g

Converting the mass of the solvent to kg:

mass of solvent = 50.0 g = 0.0500 kg

Now, we can calculate the molality:

m = 55.97 g / 0.0500 kg = 1.12 mol/kg

Finally, we can substitute the values into the boiling point elevation formula and solve for the molar mass of the unknown solute:

ΔTb = (1.71 K/m) * (1.12 mol/kg) * 1

2.76°C = 1.92 K * mol/kg

mol/kg = 2.76°C / 1.92 K = 1.4375

Since mol/kg is numerically equal to the molar mass of the solute, the molar mass of the unknown solute is 1.4375 g/mol or approximately 1.44 g/mol.

know more about molar mass here:

https://brainly.com/question/837939

#SPJ11

The theoretical yield of the water in the reaction is 329.4 g.

We know that we can be able to obtain the theoretical yield when we look at the stoichiometry of the reaction that we have here. In this case, it is clear that would need to rely on the reaction equation and it would be our guide.

We have that;

2 moles of hydrogen would produce 2 moles of water

18.3 moles of hydrogen would also produce 18.2 moles of water.

Theoretical yield of water would now be;

18.3 * 18 g/mol

= 329.4 g

Learn more about theoretical yield:https://brainly.com/question/14966377

#SPJ1

Answer:

Six

Explanation:

Mᵣ                           =  46

Aᵣ(C) = 0.522 × 46 =  24

Difference              =  22

Less 1 O                  = -16

Aᵣ(H)                        =   6

The relative atomic mass of the H atoms is 6.

The molecule contains six hydrogen atoms.

Answer:

carbon-14

Explanation:

becouse protons and neutrons are nagetivly charged

Answer:

D

Explanation:

Please mark me as brainlyest

Producing hydrogen gas. Hence, option D is correct.

Electrolysis is described by two half-reactions. These half reaction are the oxidation half-reaction and reduction half-reaction.

Electrolysis involves the transfer of electrons. Each half reaction is characterized by the loss or gain of electrons.

The only reason why producing hydrogen gas is not used most of the time is because electrolysis has very low efficiency, most of the energy finishes up being converted to heat and 95% of the hydrogen is produced by steam reforming.

Hence, option D is correct.

Learn more about electrolysis here:

https://brainly.com/question/12054569

#SPJ5

Answer:

Cotton Shirts

Explanation:

I would think that the cotton shirts would be more appropriate form of of clothing for summer.

Cotton has tiny pores that enable the sweat to evaporate off your skin, and hence keep you cooler. At the same time it absorbs this sweat, allowing easy evaporation. Synthetic fibers hold heat in, and do not allow sweat to evaporate.

It would be that Rana should buy cottons shirts for summer.

The Lewis dot structure that represents an element that should be placed in column VIIA of the periodic table is a structure that has 7 valence electrons.
The VIIA column of the periodic table, also known as the halogens, contains elements that have 7 valence electrons in their outermost energy level. Therefore, the Lewis dot structure for any of these elements should have 7 dots or electrons placed around the element's symbol.

The Lewis dot structure is a visual representation of an element's valence electrons, which are the electrons that participate in chemical bonding. In this type of structure, the element's symbol is placed in the center, and dots or lines are used to represent its valence electrons. The dots are placed around the symbol, with each dot representing a single valence electron. The number of valence electrons an element has determines its position in the periodic table and its reactivity.

learn more about Lewis dot structure

https://brainly.com/question/20300458

#SPJ11

The mass of oxygen gas produced, given that 15.8 g of potassium permanganate is heated until no more oxygen gas is given off is 1.6 g

From the question given, the following data were obtained:

The mass of oxygen gas produced from the reaction can be obtained as follow:

Mass of potassium permanganate = Mass of remaining substance + mass of oxygen

Inputting the given parameters, we have:

15.8 = 14.2 + mass of oxygen

Collect like terms,

Mass of oxygen = 15.8 - 14.2

= 1.6 g

Thus, we can conclude that the mass of oxygen gas produced from the reaction is 1.6 g

Learn more about mass produced:

https://brainly.com/question/9526265

#SPJ1

Answer:

kcgiobb jkffiob hffyio hiiddhoo hhioiv

Answer: Have a blessed day

Explanation:

Water Cycle: Component # 1. Evaporation:

Evaporation is the process where a liquid changes from its liquid state to a gaseous state. Liquid water becomes water vapour. Temperature is the primary factor for evaporation.

During the water cycle the water of the oceans and freshwater bodies, such as lakes and rivers, is warmed by the sun and evaporates. During the process of evaporation, impurities in the water are left behind. As a result, the water that goes into the atmosphere is cleaner than it was on Earth.

Water Cycle: Component # 2. Condensation:

Condensation is the opposite of evaporation. Condensation is the process where a gas is changed into a liquid. Condensation occurs when the temperature of the vapour decreases.

The water droplets formed from condensation are very small and they remain suspended in the atmosphere. There millions of droplets of suspended water form clouds in the sky or fog at ground level. Water condenses into droplets only when there are small dusts particles present around.

Water Cycle: Component # 3. Precipitation:

When the temperature and atmospheric pressure are right, the small droplets of water in clouds form larger droplets or raindrops and it is called precipitation. The raindrops fall to earth.

As a result of evaporation, condensation and precipitation, water travels from the surface of the Earth goes into the atmosphere, and returns to Earth again.

Water Cycle: Component # 4. Surface Runoff:

Much of the water that returns to Earth as precipitation runs off the surface of the land and flows down-hill into streams, rivers, ponds and lakes. Small streams flow into the ocean. Surface runoff is an important part of the water cycle because, through surface runoff, much of the water returns again to the oceans, where a great deal of evaporation occurs.

Water Cycle: Component # 5. Infiltration:

ADVERTISEMENTS:

Infiltration is an important process where rain water soaks into the ground, through the soil and underlying rock layers. Some of this water ultimately returns to the surface at springs or in low spots downhill. Some of the water remains underground and is called groundwater.

As the water infiltrates through the soil and rock layers, many of the impurities in the water are filtered out. This filtering process helps in cleaning of the water.

Water Cycle: Component # 6. Transpiration or Evapotranspiration:

This is performed by plants. As plants absorb water from the soil, the water moves from the roots through the stems to the leaves. Once the water reaches the leaves, some of it evaporates from the leaves, adding to the amount of water vapour in the air. This process of evaporation through plant leaves is called transpiration. In large forests, an enormous amount of water will transpire through leaves.

The following are the most critical parameters to control oxide growth: Temperature: The temperature at which oxide growth occurs is critical to the process.

The rate of oxide growth varies exponentially with temperature. For most materials, the oxidation rate doubles every 10°C increase in temperature. Ambient gas: The composition of the ambient gas and its partial pressure are critical to oxide growth. The oxygen concentration in the atmosphere affects oxide growth. The oxidation rate can be significantly reduced if the oxygen concentration is reduced or removed from the atmosphere. Metal composition: The material composition of the substrate to be oxidized has an impact on the oxidation rate.

Aluminum oxide, for example, grows more rapidly on pure aluminum substrates than on aluminum alloys. Oxidation can be significantly impacted by the presence of impurities or alloying elements.

Therefore, temperature at which oxide growth occurs is critical to the process.

To learn more about substrate check the link below-

https://brainly.com/question/4047091

#SPJ11

The molarity of the solution of H₃PO₄ needed to neutralize the KOH solution is 0.35 M

H₃PO₄ + 3KOH —> K₃PO₄ + 3H₂O

From the balanced equation above,

MaVa / MbVb = nA / nB

(Ma × 10.2) / (0.2 × 53.5) = 1 / 3

(Ma × 10.2) / 10.7 = 1 / 3

Cross multiply

Ma × 10.2 × 3 = 10.7

Ma × 30.6 = 10.7

Divide both side by 30.6

Ma = 10.7 / 30.6

Ma = 0.35 M

Learn more about titration:

https://brainly.com/question/14356286

#SPJ1

Answer:

prolly the gay one

Explanation:

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

Learn more about Oxygen here : brainly.com/question/13905823

#SPJ11

Answer:

m = 673 g

Explanation:

We need to find the mass of 5.90 mol of \(C_8H_{18}\)

Molar mass of \(C_8H_{18}\) is:

\(M=8\times 12+1\times 18\\\\=114\ g/mol\)

Let m be the mass of 5.90 mol of \(C_8H_{18}\). Using mole concept to find it.

No of moles = mass/molar mass

\(m=5.9\times 114\\\\=672.6\ g\\\\\approx 673\ g\)

So, the required mass is 673 g. Hence, the correct option is (d).

Answer:

673 g

Explanation:

The properties of BF₃ are affected by a variety of different interactions. The most important of these is the covalent bond between the three atoms, which is the primary source of stability for this molecule.

Additionally, the molecule can be affected by intermolecular forces such as hydrogen bonding and London dispersion forces. These forces help to hold the three atoms together and also affect the molecular shape. Finally, BF₃ can also be affected by electromagnetic interactions, such as dipole-dipole interactions and induced dipole interactions.

All of these interactions together contribute to the overall properties of the molecule, such as its melting and boiling points, viscosity, and solubility.

know more about covalent bond here

https://brainly.com/question/19382448#

#SPJ11

Correct question is :

what response identifies all the interactions that might affect the properties of bf₃?

Answer: 1) True

2) False 4)False 5)True

Explanation: I took a test that had similar questions

The equation that represents the formation reaction of CH3OH(l) is (a) C(g) + 2H2(g) + ½O2(g) → CH3OH(l).

The formation reaction of a compound is the reaction in which the compound is formed from its constituent elements in their standard states. In the case of CH3OH, the constituent elements are carbon (C), hydrogen (H), and oxygen (O). The standard states for each element are:

Carbon (C): solid graphite

Hydrogen (H): gas

Oxygen (O): gas

To form CH3OH, one carbon atom, four hydrogen atoms, and one oxygen atom are required.

However, the oxygen atom must be present in the form of O2 gas, since it is in its standard state. Thus, the correct equation for the formation reaction of CH3OH is:

C(g) + 2H2(g) + ½O2(g) → CH3OH(l)

This equation shows that one molecule of CH3OH is formed from one molecule of carbon gas, two molecules of hydrogen gas, and half a molecule of oxygen gas.

Note that the equation is balanced, meaning that the number of atoms of each element is the same on both the reactant and product sides of the equation.

Visit here to learn more about Compounds:

brainly.com/question/14782984

#SPJ11