Does anyone know the answers for these

Answer: Option D.

Transport water from roots to leaves.

Explanation:

This is because xylem is one of the vascular tissues in plants that consist of specialized conducting cells known as treachery elements which transport water and other nutrients from the root to stem and the leaves of plants. It also give physical support to plants or give strength to plants.

Answer:12

Explanation:because it’s 12

Answer:

P₂Cl₁₀

Explanation:

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

Molar mass of compound X = 416.48 g/mol

Percentage of phosphorus (P) = 14.87%

Percentage of Chlorine (Cl) = 85.13%

Molecular formula of X =?

Next, we shall determine the empirical formula of compound X. This can be obtained as follow:

P = 14.87%

Cl = 85.13%

Divide by their molar mass

P = 14.87 / 31 = 0.480

Cl = 85.13 / 35.5 = 2.398

Divide by the smallest

P = 0.480 / 0.480 = 1

Cl = 2.398 / 0.480 = 5

Empirical formula of compound X is PCl₅

Finally, we shall determine the molecular formula of compound X. This can be obtained as follow:

Molar mass of compound X = 416.48 g/mol

Empirical formula = PCl₅

Molecular formula =?

Molecular formula= [Empirical formula]ₙ

[PCl₅]ₙ = 416.48

[31 + (35.5 × 5)]ₙ = 416.48

[31 + 177.5]n = 416.48

208.5n = 416.48

Divide both side by 208.5

n = 416.48 / 208.5

n = 2

Molecular formula = [PCl₅]ₙ

Molecular formula = [PCl₅]₂

Molecular formula = P₂Cl₁₀

Therefore, the molecular formula of compound X is P₂Cl₁₀

If a sample of oxygen gas occupies 30.0 mL at -10°C and 680 mmHg, what is the volume at 10°C and 310 mmHg? Express your answer to two significant figures and include the appropriate units.

Answer:

The study is called ecology

Explanation:

Mark as brainliest if I'm correct

Answer:

i think its ecology im not sure since im bad at math lol

Answer:

Explanation:

Electric current in a wire, where the charge carriers are electrons, is a measure of the quantity of charge passing any point of the wire per unit of time. ... Current is usually denoted by the symbol I. Ohm's law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR.

Answer: O how well electrical energy moves in a circuit

Explanation: Electric current is a measure of the flow of charge, as, for example, charge flowing through a wire. Electric current in a wire, where the charge carriers are electrons, is a measure of the quantity of charge passing any point of the wire per unit of time.

Answer:

C.) Sodium

Explanation:

Sodium is an "Alkali Metal"

Answer:

The elements in the acorn are rearranged to make the molecules the squirrel's body needs. The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells.

Explanation:

hpoe this helps

Answer:

19 atoms

Explanation:

6 carbon, 12 hydrogen, one Nitrogen

Answer:

D; none of the above

Explanation:

Binary ionic compounds are composed of one metal and one nonmental.The metals are always the first element whereas the nonmetals are the second element.

Answer: Sodium fluoride

Answer:

65000 > 110 > 0.033 > 0.0000090 > 0.0000082.

Explanation:

Hello there!

In this case, since those numbers are given in scientific notation, it turns out relevant to express them in standard notation as shown below:

0.0000082

65000

110

0.033

0.0000090

Thus, by arranging them from greatest to least, we obtain:

65000 > 110 > 0.033 > 0.0000090 > 0.0000082

Best regards!

Answer:

They're all mixtures of something

Explanation:

if solution conduct electricity then it will ionic bond

Explanation:

number of moles = m/Mr and the process is in the picture

Answer:

C

Explanation:

Answer:

160.000 años corresponde a 16.000 décadas.

Explanation:

Para resolver correctamente el ejercicio debemos plantear la regla de tres simple de la siguiente manera:

1 década equivale a 10 años; A cuantas decadas equivalen 160.000 años?

1 década→10 años

          x    ←160.000 años

Debemos multiplicar 160.000 por 1 y luego dividir entre 10 ;

x=([tex]\frac{160.000x1}{10}[/tex])=16.000 décadas; en notación científica sería 16x10^3.

Respuesta: 160.000 años corresponde a 16.000 décadas.

Answer:

D but I’m traitor figure out y my question is precipitation helps determine climate by. Weathe. My options are The interaction of the prevailing winds upon land or oceans. The development of local storms. The passage of weather fronts. All of the above

Explanation:

Answer:

Redox reaction

Explanation:

Answer: = 17.6

Explanation:

Molar mass of CO2 = 44 g mol-1

Mass of 1 mole of CO2 = 44 g

Mass of 0.4 mole = 44 x 0.4

= 17.6g  

Answer:

the answer is 17.6 that's what I got

This question is incomplete, the complete question is;

The number density of conduction electrons in pure silicon at room temperature is about 10¹⁶ m⁻³. By doping with phosphorous, you desire to increase this number by a factor of 1 million (10⁶). At room temperature, assume that the thermal energy is sufficient that all of the extra electrons from the P doping enter the conduction band. What fraction of silicon atoms must you replace with phosphorous atoms

Answer:

the  fraction of silicon atoms we must replace with phosphorous atoms is 4( 10⁶  - 1 )

Explanation:

Given that;  

the number density no =  10¹⁶ m⁻³

Required no =  (10¹⁶ × 10⁶) = 10²² m⁻³

Each silicon atom has 4 valence electron,

Hence; Silicon density =  10¹⁶/4

now, if x = No of silicon atoms to be replaced with phosphorous, then;

(10¹⁶/4 - x)4 + 5x = 10²²

10¹⁶ - 4x + 5x = 10²²

10¹⁶ + x = 10²²

x = 10²² - 10¹⁶

Fraction of silicon atoms will be;

⇒ 10²² - 10¹⁶ / 10¹⁶/4

⇒ 4( 10²² - 10¹⁶ / 10¹⁶ )

⇒ 4( 10²²/10¹⁶  - 10¹⁶/10¹⁶ )

⇒ 4( 10⁶  - 1 )

Therefore, the  fraction of silicon atoms we must replace with phosphorous atoms is 4( 10⁶  - 1 )

Answer:

Tritium

Tritium is a hydrogen isotope consisting of one proton, two neutrons and one electron. It is radioactive, with a half-life of 12.32 years.

Explanation:

hope it helps :)))

The element which possess one neutron, one proton and two electrons is helium, He. The atomic number of helium is 2 in periodic table and have a mass number of 4 also.

Helium is second element in the periodic table. It is a noble gas and thus unreactive because its valence shell is completely filled and thus helium is placed in the noble gas group 18.

Atomic number of an element is number of electrons in it. For a neutral atom the number of electrons and protons are equal. Thus, all the positive charges is neutralised by equal number of  electrons.

Neutrons have no charge and thus, they are neutral. Atoms forms positive ions when number of protons dominate and they will form negative ions if they gain electron and thus number of electrons dominates.

The sum of number of protons and neutrons is called mass number of the element. Helium contains 2 neutron and 2 oproton, thus its mass number is 4 and its atomic number is two.  

To find more about helium, refer the link below:

https://brainly.com/question/1780577

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Answer:

CO2 (Carbon Dioxide) has a negative impact on environment.

Explanation:

CO2 is a product of combustion of Methane

The carbon dioxide product of the reaction of methane includes an influence on the environment. So, not only does methane contribute to global warming instantly but even, indirectly via the release of carbon dioxide.

As methane exists emitted into the air, it responds in several dangerous ways. It predominantly leaves the atmosphere through oxidization, comprising water vapor and carbon dioxide. Methane inhalation can result in mood modifications, slurred speech, vision problems, memory loss, nausea, vomiting, facial flushing, and headache. In severe cases, there may be differences in breathing and heart rate, balance concerns, numbness, and unconsciousness.

Hence, The carbon dioxide product of the reaction of methane includes an influence on the environment. So, not only does methane contribute to global warming instantly but even, indirectly via the release of carbon dioxide.

To learn more about methane,refer here :

https://brainly.com/question/25649765

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Answer: chemical energy is converted to heat and light energy

Explanation: exothermic reaction

4CH3+7O2–>6 H2O+4CO2+energy

Answer:

a

Explanation:

Answer:

There will be more light-colored wolves.

Explanation:

Evolution is based off the survival of those with the most advantages in the wild. Since their light coat gives them a survival advantage, they will reproduce more.

Answer:

this is very true

Explanation:

Answer:

5) donating H to a solution when they have been depleted and accepting H when they are in excess.

Explanation:

A buffer solution is a solution that undergoes a negligible change in pH in addition of moderate quantities of acid or alkali. In other words, a buffer solution is one that resists a change in pH on addition or dilution of small amounts of acids or alkalis.

So, from the given question:

Buffers are substances that help resist shifts in pH by donating H to a solution when they have been depleted and accepting H when they are in excess.

Answer:

increase

Explanation:

Reactions that are initiated by light are called photochemical reactions. The brighter the light, the faster the reaction.

Answer: An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).

Explanation:

Answer:

1620 cm⁻¹·M⁻¹

Explanation:

Beer's Law states that:

A = ε * b * C

Where A is the absorbance, ε is the Molar Absorptivity coefficient, b is the path length, and C is the molar concentration.

Use the given data:

0.405 = ε * 0.5 cm * 5x10⁻⁴ M

And solve for ε:

ε = 1620 cm⁻¹·M⁻¹

So the Molar Absorptivity coefficient of Compound X at this 265 nm is 1620 cm⁻¹·M⁻¹.

Answer-150 kj

Explanation:

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