Pls help quickly!
give quick reason why.

Answer:

234

Explanation:

so 3 x 3 x 26 =234

Answer:

The world’s oceans are so big we thought for a long time that there was nothing humans could do to hurt them. Now we’re facing an imminent and global collapse of our fisheries, projected to happen as early as 2048, thanks to overfishing, wasteful fishing practices and massive overconsumption. But, there are a few key tried-and-tested solutions to overfishing that have been successfully implemented around the world. The trick is to scale these solutions up to a global scale, encouraging countries that have originally been resistant to helping and get them onboard, and supporting countries that don’t have the means to update their fishing policies themselves.

Hope it will help you

Answer:

8

Explanation:

since both hydrogen and water has the same numbers of mole. then as we know that mole = mass/molar mass, 2=mass/2 therefore mass= 4g

Answer: use big words

Explanation:

Answer:

19.32 g/cm³

Explanation:

The density will remain the same no matter how many times you cut the gold.  The density is g/cm³ or g/mL.  Density is essentially how many grams 1 mL of a compound weighs.

Answer:

[tex]\boxed {\boxed {\sf 19.32 \ g/cm^3}}[/tex]

Explanation:

Density is the mass per volume (g/mL or g/cm³). It is an intrinsic property. This means it is not dependent on the amount and all samples of the same substance have the same density.

Therefore, if a piece of gold has a density of 19.32 grams per cubic centimeter and it is cut in half, the two pieces will have the same density.

Answer:

Independent Variable: The thing in an experiment which is changed.

Dependent Variable: The thing in an experiment which is affected by the change. (In other words, it's affected by the independent variable.)

Control Variable: The other factors of the experiment that remain unchanged.

For example, say you want to do an experiment about the effects of water on plant height. So, the independent variable, or the thing that is changed would be the amount of water, and the dependent variable would be the plant height, as the plant height is directly affected by the independent variable. Lastly, for this to be a fair experiment, there must be control variables. For example, all of the plants should be put in a room with equal temperature, they should get the same amount of sunlight, etc.

I hope this answers your question- feel free to ask me if you need any more help.

Answer with Explanation:

Lol.. even i was confused before  .. so i learnt now ill help u :

Simple!

See... lets take simple expirament to explain:

My expirament is to verify if sunlight affects the growth of plants ...

So here :

My controlled variable : It is what is held constant.. So ur supposed to NOT it like everything else expect sunlight..(ex: water, soil, type of plant etc)

My Independent variable : Variable that is changed.... So this is wht  u ARE changing to make th expirament ... (for ex: here sunlight u will chanhe... u will put on in a dark room and a nother in the light..)  

My dependetn variabe:l Some thing that changes on is own..cause of the expiramen t... like the result ..(for ex: height , growth of plant etc)

I hope u  understood !!  :))

Answer:

increase

Explanation:

Answer:

The pH scale measures how acidic or alkaline — basic — something is. Your body works constantly to carefully control pH levels of blood and other fluids. The body's pH balance is also called the acid-base or acid-alkaline balance. The right pH levels are needed for good health.

Answer:

i'd say D

Explanation:

the dependent variable is the change that happens

Answer

well it gets used

Explanation:

because it generates power through fission

Answer:

signed!!

Explanation:

mark me brainliest pls

Answer:

if it means i could help ppl across the world, then yes! sighned! i dont

have money so i cant do the fundraiser aYvY SORRY

Explanation:

Answer:

The temperature will be 384.7 K

Explanation:

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. For a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement of the gas molecules. .

In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Having an initial state 1 and a final state 2, the following is true:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case:

Replacing:

[tex]\frac{33.9 L}{285.4 K} =\frac{45.7 L}{T2}[/tex]

Solving:

[tex]T2=45.7 L*\frac{285.4 K}{33.9 L}[/tex]

T2= 384.7 K

The temperature will be 384.7 K

Answer:

Light waves are the fastest in existince.

Answer:

D) kinetic energy

Explanation:

energy possessed by a body at motion is called kinetic energy.

Answer:21 moles of PbCl2 formed

Explanation: 3Pb(NO3)2(aq) + 2AlCl3(aq) --> 3PbCl2(s) + 2Al(NO3)3(aq)

14 moles AlCl3 x 3 moles PbCl2/2 moles AlCl3 =21 moles of PbCl2 formed

The number of moles of PbCl₂ produced when 14 moles of AlCl₃ are consumed in the reaction is 21 moles

3Pb(NO₃)₂ + 2AlCl₃ —> 3PbCl₂ + 2Al(NO₃)₃

From the balanced equation above,

2 moles of AlCl₃ reacted to produce 3 moles of PbCl₂.

From the balanced equation above,

2 moles of AlCl₃ reacted to produce 3 moles of PbCl₂.

Therefore,

14 moles of AlCl₃ will react to produce = (14 × 3) / 2 = 21 moles of PbCl₂.

Thus, 21 moles of PbCl₂ were obtained from the reaction.

Learn more about stoichiometry:

https://brainly.com/question/14735801

Explanation:

Ni + 2KCl → 2K + Nicl2

It form

potassium and nickel chloride.

Answer:

group 1

Explanation:

chlorine donate electron

Chlorine will more likely to form bonds with the elements of group 1 as it has 7 valence electrons.

Chlorine is an element that is present in group 17. This family is also known as the Halogen family. The elements of this group will have seven electrons in their outermost shell. It has only one electron less to attain a stable noble electron configuration.

Thus, it will form bond more readily with Group 1 that has only one electron in its outermost shell.

Thus, correct option is a.

Find more information about Outermost electron here:

brainly.com/question/15908519

Answer:

Explanation:

1.0

⋅

10

−

7

Explanation:

Start by writing a balanced chemical equation for the partial ionization of the acid

HA

(aq]

+

H

2

O

(l]

⇌

A

−

(aq]

+

H

3

O

+

(aq]

Notice that you have

1

:

1

mole ratios across the board. For every mole of acid that ionizes in aqueous solution, you get one mole of its conjugate base and one mole of hydronium ions,

H

3

O

+

.

In other words, the equation produces equal concentrations of conjugate base and hydronium ions.

Now, you can use the pH of the solution to calculate the equilibrium concentration of the hydronium ions.

pH

=

−

log

(

[

H

3

O

+

]

)

⇒

[

H

3

O

+

]

=

10

−

pH

In your case, the pH of the solution is equal to

4

, which means that you'll have

[

H

3

O

+

]

=

10

−

4

M

By definition, the acid dissociation constant,

K

a

, will be equal to

K

a

=

[

A

−

]

⋅

[

H

3

O

+

]

[

HA

]

The expression for the acid dissociation constant is written using equilibrium concentrations. So, if the reaction produced a concentration of hydronium ions equal to

10

−

4

M

, it follows that it also produced a concentration of conjugate base equal to

10

−

4

M

.

Because the initial concentration of the acid is considerably higher than the concentrations of the conjugate base and hydronium ions, you can approximate it to be constant.

This means that the acid dissociation constant for this acid will be

K

a

=

10

−

4

⋅

10

−

4

0.100

=

1.0

⋅

10

−

7

This is the underlying concept behind an ICE table

HA

(aq]

+

H

2

O

(l]

⇌

A

−

(aq]

+

H

3

O

+

(aq]

I

0.100

0

0

C

(

−

x

)

(

+

x

)

(

+

x

)

E

0.100

−

x

x

x

Here

x

represents the equilibrium concentration for the conjugate acid and hydronium ions. Since you know that

x

=

10

−

4

, you will have

K

a

=

10

−

4

⋅

10

−

4

0.100

−

10

−

4

Once again, you can use

0.100

−

10

−

4

=

0.0999

≈

0.100

to get

K

a

=

10

−

8

0.100

=

1.0

⋅

10

−

7

Answer:

labouring kits tub sagot non

Explanation:

games like that in England are not a good thing to do with them in the first half and we are in a kant state that we are going through a difficult situation that will happen and sex.

Write the balanced chemical equation

Calculate the moles of

Na2CrO4

Use the molar ratio from the balanced equation to calculate the moles of

Ag2CrO4

Calculate the mass of

Ag2CrO4

mass of Ag2CrO4 produced is 124 g.

The mass of silver chromate are produced when 250. mL of 1.500 M Na₂CrO₄ are added to excess silver nitrate is 62.028g.

Mass of any susbtance will be calculated by using moles as:
n = W/M, where

W = given mass

M = molar mass

Relation between moles and molarity as:

M = n/V, where

M = molarity

V = volume

Moles of Na₂CrO₄ = (1.5)(0.25) = 0.375 mol

Given balanced chemical reaction is:

2AgNO₃(aq) + Na₂CrO₄(aq) → Ag₂CrO₄(s) + 2NaNO₃(aq)

From the stoichiometry of the reaction it is clear that,

2 moles of Na₂CrO₄ = produces 1 mole of Ag₂CrO₄

0.375 moles of Na₂CrO₄ = produces 1/2×0.375=0.187 mole of Ag₂CrO₄

Mass of 0.187 moles of Ag₂CrO₄ = (0.187mol)(331.7g/mol) = 62.028g

Hence required mass of Ag₂CrO₄ is 62.028g.

To know more about mass & moles, visit the below link:

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#SPJ2

i just answered this question and it was actually 1,4,1,2

Answer:

Mitochondria

Explanation:

Glucose in an energy molecule contained in carbohydrate food substances. The end product of the digestion of carbohydrate is glucose which is broken down to produce energy.

The sequence of breakdown of glucose is as follows; In the first step, 6-carbon glucose is broken down into two molecules of  3-carbon pyruvic acid. This occurs in the cytoplasm of the cell. It is an anaerobic process.

In the second step which occurs in the mitochondrion, each of the molecules of pyruvic acid is now oxidized to carbon dioxide and water and energy is produced in the process.

Answer:

It is C

Explanation:

observation three and option three go togther

Answer:

7.27 grams

Explanation:

Format= starting amount (g)·(1 mol/molar mass)·(amount of wanted/amount of starting)·(molar mass of wanted/1 mol)

[tex]41.0 x \frac{1 mol}{17.031}x\frac{3 H2}{2NH3} x\frac{2.016}{1 mol} =7.27[/tex]

Answer:

help with what? Let me know in the comments! :)

Explanation:

Answer:

Claim 1- The evidence that supports my claim because Evidence Card b says “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”    My first piece of evidence is that if you don't follow thee directions then something bad would happen

Explanation: