What can she find out from her experiment?

A. If soaked bean seeds sprout faster

B. If dry bean seeds require more water

C. If dry bean seeds produce taller plants

D. If soaked bean seeds require more sunlight​

Answer:

Plastic is better because it doesn't melt in the microwave but aluminum burns in the microwave

Explanation:

Answer:

If all the objects are placed at the same angle.

Explanation:

If all the objects are placed at the same angle so all the light from the flashlight shine comes back to the flashlight. If the A object is placed at the specific location at which the mirror X reflects the light after hitting it, then the other E object is placed at the location where the light comes after reflecting the A object then the light comes back to the flashlight if the angle between objects placement is right.

Answer:

d

Explanation:

Answer:

Hello the table required is missing attached below is the missing table

Answer : 1299.05 k

Explanation:

Given data :

concentration of carbon ( Cx ) at a position 3.9mm below surface = 0.35

concentration of carbon ( Co ) = 0.20

surface carbon ( Cs ) = 1

Determine the temperature at which the treatment was carried out

first we will determine the value of Z in the table attached

given that the value of erf ( Z ) for Z = 0.8125 from the table

= [tex]\frac{Z- 0.9}{0.95-0.9} = \frac{0.8125-0.797}{0.8209-0.797}[/tex]

 make Z subject of the equation

Z = 0.932

next calculate the diffusion coefficient using the relation below

Z = [tex]\frac{x}{2\sqrt{Dt} }[/tex]   ----- ( 1 )  where ; z = 0.932 , x = 3.9 mm , t = 48h

0.932 =

x = 3.9 mm = 0.0039 m

t = 48 h = ( 48 *60* 60 ) = 172800 secs

Insert values into equation 2

0.932 = [tex]\frac{0.0039}{2\sqrt{D * 172800} }[/tex]  

[tex]\sqrt{D*172800}[/tex] = (0.0039 / 0.932 ) / 2

      172800 * D  =( 0.0021 )^2

therefore D = 2.55 * 10^-11 m^2/s

Finally calculate the temperature at which the treatment was carried out

D = [tex]Do exp(\frac{-Qd}{RT} )[/tex]  ----- ( 3 )

D = 2.55 * 10^-11 m^2/s ,

Do = 2.3*10^-5  m^2/s ( gotten from Diffusion data table )

Qd = 148000 J/mol ( gotten from Diffusion data table )

R = 8.31 J/mol k ( gotten from Diffusion data table )

back to equation 3

D / Do = exp ( -17810 / T )

1.11 * 10^-6 = exp ( -17810 / T )

therefore T =  -17810 / ln( 1.11 * 10^-6 )

                   = - 17810 / -13.71  =   1299.05 k

Answer:

1.25M

Explanation:

Answer:

ionic compound

Explanation:

An ionic compound and a covalent compound react differently when dissolved in water (H2O).

The ionic compounds when dissolved in H2O, undergo a physical change called dissociation. In this change the molecules of water surround the ionic compound and ions of ionic compound disperse  uniformly in the water. The complete dissociation of ionic compounds in H2O makes it a strong electrolyte and solution will conduct an electric current.

Some of the covalent compounds also conduct electricity as when they dissolve in H2O, the molecule of covalent compound react chemically with the solvent to produce ions. Generally, covalent compounds are weak electrolytes and do not conduct much electricity as ionic compounds but exception are their such as HCl and benzene.

Answer:

Explanation:

TiO2 + C + 2 CI2 → TiCI4 + CO2

(a)

(2.16 mol TiO2) x (2 mol CI2 / 1 mol TiO2) x ( 70.9064 g C/mol) = 306 g CI2

(b)

(2.16 mol TIO2) x (1 mol C / 1 mol TiO2) x ( 12.01078 g C/mol)n= 25.9 g C

(c)

Use the law of conservation of mass:

(2.16 mol TiO2) x ( 79.8660 g TiO2/mol) + (306 g CI2 + 25.9 g C = 504 g total.

Hope this help!:)

question 1 water question 2 instant tea question 3 mixture

Answer:

snow is made up of a variety of mostly organic matter, including dead or dying animals and phytoplankton, protists, fecal matter, sand, and other inorganic dust.

Explanation:

I hope I helped!!

Plz mark me brainliest it would really make my day!

Answer:

I think its organic unless we are talking about this snow storm then no

The element sulfur (S) is most likely to form covalent bonds with the element oxygen. Thus, the correct option for this question is D.

Covalent bonds may be defined as a type of chemical bond that significantly involves the mutual sharing of electrons in order to form electron pairs between atoms. This pairing of electrons is simultaneously attracted by the two atomic nuclei.

Sulfur is categorized into the category of nonmetal in group 6A, and therefore it has 6 valence electrons. In order to obey the octet rule, it needs to gain 2 electrons. It can do this by forming 2 single covalent bonds.

The sulfur atom subsequently shares four valence electrons with two oxygen atoms as two covalent double bonds, and shares its remaining two electrons with two oxygen atoms, forming two covalent single bonds.

Therefore, the element sulfur (S) is most likely to form covalent bonds with the element oxygen. Thus, the correct option for this question is D.

To learn more about Covalent bonds, refer to the link:

https://brainly.com/question/3447218

#SPJ6

Answer:

Magnesium chloride/Molar mass

95.211 g/mol

Explanation:

Answer:

Na

Explanation:

Answer:

b

Explanation:

it could also be a, c, or d

Answer:

a

Explanation:

sugar is composed of different elements combined in a manner form

Answer:

Vascular tissue transports water, minerals, and sugars to different parts of the plant. Vascular tissue is made of two specialized conducting tissues: xylem and phloem. Xylem tissue transports water and nutrients from the roots to different parts of the plant, and also plays a role in structural support in the stem.

Explanation:

HOPE THIS HELPS!

28 mol CaF

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 1.7 × 10²⁵ molecules CaF

[Solve] moles CaF

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

28.2298 mol CaF ≈ 28 mol CaF

Answer: the baseball bat transfor its energy in the ball.

Explanation: you hit it with one and find out and tell me what you think what happen.

Answer:

93 kPa

Explanation:

Step 1: Given data

Step 2: Calculate the final pressure of carbon dioxide gas

If we assume carbon dioxide behaves as an ideal gas, we can calculate the final pressure of carbon dioxide gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

P₂ = P₁ × V₁/V₂

P₂ = 155 kPa × 3.0 L/5.0 L = 93 kPa

Answer:

1.47 atm

Explanation:

Step 1: Given data

Step 2: Calculate the final pressure of the gas

We can calculate the final pressure of the gas using the combined gas law.

P₁ × V₁ / T₁ = P₂ × V₂ / T₂

P₂ = P₁ × V₁ × T₂ / T₁ × V₂

P₂ = 1 atm × 32.4 L × 352 K / 273 K × 28.4 L = 1.47 atm

The dicotyledons, also known as dicots, are one of the two groups into which all the flowering plants or angiosperms were formerly divided. The name refers to one of the typical characteristics of the group, namely that the seed has two embryonic leaves or cotyledons.

Answer:

The percent dissociation would increase

Explanation:

Percent dissociation is the ratio of amount dissociated to the initial concentration.

Decreasing the concentration of the solution leads to an increase in percent dissociation.

Answer:

?????

Explanation:

...? what...?

Answer:

3 atoms

Explanation:

there is one calcium and two chlorine

Answer:

4 is the answer

Explanation:

i am not sure for this question

Answer:

A.

1.5

B

Explanation:

Answer:

See explanation below

Explanation:

Let's answer this by parts.

a) As the reaction is naturally exothermic (Exerts heat), increasing temperature means that the reaction will move forward the direction where its absorbing heat

, so the equilibrium will be favored to the reactant side.

b) In this case, the addition of CO, which is a reactant will favor the reaction to the product side. This is because putting more quantity in the reactants will cause that the equilibrium constant K, increase it's innitial value, and this favors the product side.

c) In this case, it happens something similar to case b. This will cause that the reaction will have to work to cover the loss of methanol, therefore, equilibrium will move to the product side too.

d) In this case, we are adding another substance that reacts with CO, so it means that the other reactant is being removed, therefore, the reaction will work to cover this loss but also to cover the adding of the new substance, causing that the K decrease it's value, so equilibrium will be favored to the reactants side.

Hope this helps

Answer:

[tex]n=1.732mol[/tex]

[tex]\% N=18.7\%[/tex]

Explanation:

Hello!

In this case, since the molecular formula of glycine is C₂H₅NO₂, we realize that the molar mass is 75.07 g/mol; thus, the moles in 130.0 g of glycine are:

[tex]n=130.0g*\frac{1mol}{75.07 g}\\\\ n=1.732mol[/tex]

Furthermore, we can notice 75.07 grams of glycine contains 14.01 grams of nitrogen; thus, the percent nitrogen turns out:

[tex]\% N=\frac{14.01}{75.07}*100\% \\\\\% N=18.7\%[/tex]

Best regards!

Answer:

Hydrogen 2 is called deuterium, Hydrogen 3 is called Tritium

Explanation:

Hydrogen is the only element whose isotopes have different names in common use today: the 2H (or hydrogen-2) isotope is deuterium and the 3H (or hydrogen-3) isotope is tritium.