Help me plz I’m like slow

Answer:

The limiting reactant is the covers.

We are left with 3750 sheets of lined paper, 1125 sheets of graph paper and 25 staples.

Explanation:

the reaction is:

B - book

C - cover

Sl = sheet of lined paper

Sg - sheet of graph paper

St - staple

1B = 2C + 50Sl + 25Sg + 3St

We have covers for 150/2 = 75 books

We have lined paper for 7500/50 = 150 books

We have graph paper for 3000/25 = 120books

We have Staples for 250/3 = 83.(3) books, so for 83 books as we cannot make 1/3 of a book.

Because we only have covers for 75 books, covers are the limiting reactant.

After making 75 books we are left with:

0 covers

7500 - 75*50 = 3750 sheets of lined paper

3000 - 75*25 = 1125 sheets of graph paper

250 - 75*3 = 25 staples

The limiting reactant should be the covers.

We are left with 3750 sheets of lined paper, 1125 sheets of graph paper, and 25 staples.

The reaction should be like:

B - book

C - cover

Sl = sheet of lined paper

Sg - sheet of graph paper

St - staple

Now the equation should be

1B = 2C + 50Sl + 25Sg + 3St

We have covers for 150/2 = 75 books

We have lined paper for 7500/50 = 150 books

We have graph paper for 3000/25 = 120books

We have Staples for 250/3 = 83.(3) books, so for 83 books as we cannot make 1/3 of a book.

Now the left should be

7500 - 75*50 = 3750 sheets of lined paper

3000 - 75*25 = 1125 sheets of graph paper

250 - 75*3 = 25 staples

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Answer:

/dɪˈmɒkrəsi/

--noun--

A system of government by the whole population or all the eligible members of a state, typically through elected representatives.

Answer:

Circulatory

Explanation:

The circulatory system consists of the heart, lungs, arteries, veins, coronary, and portal vessels.

Answer:

5 g/cm^3

Explanation:√3V=1.91293cm

Answer:

commensalism

Explanation:

It's not parasitism as the shark is not harmed in the relationship

Answer:

please give me brainlist and follow

Explanation:

Contamination of ground water can result in poor drinking water quality, loss of water supply, degraded surface water systems, high cleanup costs, high costs for alternative water supplies, and/or potential health problems. The consequences of contaminated ground water or degraded surface water are often serious.

Answer:

strong acid and weak base

Explanation:

#carryonlearning

In the given question dissociated solution describes the property of the strong base.

Bases are substances which gives hydroxide ion into the solution.

Dissociation reaction of caustic soda will be represented as:

KOH → K⁺ + OH⁻

From the above dissociation we conclude that potassium hydroxide is fully dissociates into their ions means it is a strong base and will make the solution caustic.

Hence potassium hydroxide is a strong base.

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Answer:57.6 kJ

Explanation:

Answer:

i think the answer is c

Explanation:

sorry if im wrong i am most likely wrong but ye

Answer:

A Liquid

Explanation:

structure with large distance (gas) than goes to a loosely ordered state (liquid)

I hope this helps

Answer:

Explanation:

H m sarav

Answer: 16 g/mol

Explanation: Molarity is Moles/Liters or Mol/L

(0.50 mol/L)(1.30L) = 0.65mol

(cancels out L)

Molar mass is g/mol so...

10.5g/0.65mol = 16.1 g/mol

Rounded to 2 sig figs is 16 g/mol

Answer:

The answer is for your question is A

Answer:

The density is 7 g/cm^3

Explanation:

The formula for density is p=m/V. Where p is the density, m is mass, and V is the volume. 14/2=7.

Answer:

1. 7 (a neutral solution)

Answer: 10-7= 0.0000001 moles per liter

2. 5.6 (unpolluted rainwater)

Answer: 10-5.6 = 0.0000025 moles per liter

3. 3.7 (first acid rain sample in North America)

Answer: 10-3.7 = 0.00020 moles per liter

The concentration of H+ in the Hubbard Brook sample is 0.00020/0.0000025, which is 80 times higher than the H+ concentration in unpolluted rainwater.

Explanation:

Answer:

(A) 0.80 M

(B) 0.64 g

(C) 0.050 M

(D) 1.6 M

Explanation:

(A)

Convert 4.0 g to moles with molar mass. Convert 125 mL to L.

4.0 g x (1 mol/39.998 g) = 0.100 mol

125 mL x (1 L/1000 mL) = 0.125 L

Molarity = mol/L

Molarity = 0.100 mol/0.125 L = 0.80 M

(B)

Find moles of NaOH with the molarity you just found. And convert 20 mL to L.

Molarity = mol/L

0.80 M = mol/0.020 L

mol = 0.016

Convert moles to grams with molar mass.

0.016 mol x (39.998 g/1 mol) = 0.64 g

(C)

You know the molarity of a NaOH solution (Part A). 30 mL initial volume and 480 mL final volume are given. Dilution question so use the dilution formula.

M1V1 = M2V2

(0.80 M)(30 mL) = (M2)(480 mL)

M2 = 0.050 M

(D)

Dilution question again, use the dilution formula.

M1V1 = M2V2

(0.80 M)(200 mL) = (M2)(100 mL)

M2 = 1.6 M

Answer:

Potassium

Explanation:

Most reactive metal in the reactivity series

The element in the question is referred to the alkali metal which is known as Potassium

Potassium is a highly reactive metal and reacts with Hydrochloric acid to

form a salt known as Potassium chloride and hydrogen gas.

Hcl + K ⇒ Kcl₍s₎ + H₂₍g₎

Potassium has a white color but when it reacts with water it explodes and

gives out a purple-red color as a result of the high excitation of electrons.

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Answer:

11.3m/s

Explanation:

Answer:

dfdfaxc b

Explanation:

Answer: The number of 'entities' in a mole of any pure substance is always that. 1 mole is equivalent to the number of atoms in a 12g lump of Carbon12.

Edit: I deliberately avoided using Avogadro's number as that is different, in a technical sense, to a mole. A mole is a base unit of the International System of Units (SI) which recognized amount of substance as an independent dimension of measurement. With this recognition, the Avogadro constant was no longer a pure number but a physical quantity associated with a unit of measurement, the reciprocal mole (mol−1) in SI units.  

Therefore Avogadro constant is DERIVED from the mole (nowadays) to give something like 6.02214179 x 10^23 mole^(-1). (based on 2006 evidence)

Answer:

2 Mg + O2 -> 2 MgO

is a synthesis reaction.

Answer: 3.09 g

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} H_2SO_4=\frac{2.70g}{98g/mol}=0.0275moles[/tex]

The balanced chemical equation is

[tex]2KOH+H_2SO_4\rightarrow 6H_2O+K_2SO_4[/tex]  

According to stoichiometry :

1 mole of [tex]H_2SO_4[/tex] require 2 moles of [tex]KOH[/tex]

Thus 0.0275 moles of [tex]H_2SO_4[/tex] will require=[tex]\frac{2}{1}\times 0.0275=0.0551moles[/tex]  of [tex]KOH[/tex]  

Mass of [tex]KOH=moles\times {\text {Molar mass}}=0.0551moles\times 56g/mol=3.09g[/tex]

Thus 3.09 g of KOH is required to react completely with 2.70 grams of

[tex]H_2SO_4[/tex]

Answer:

A

Explanation:

the boat does not have a force to counter act the boys it must give which means it moves cause it is one something that is not as dense as the boy (I THINK)

Answer:

Consumers must consume other organisms to get the food that they need and are known as Heterotrophs as they cannot make their own glucose. These consumers eat producers (plants). Herbivores are considered as first order consumers. These consumers eat consumers and producers (animals and plants).

Answer:

B

Explanation:

Pressure is directly proportional to temperature

The graph correctly showing the pressure - temperature relationship is figure B. Temperature and pressure is in direct proportionality.

According to Gay-Lussacs law, at constant volume of gases, the pressure of a gas is directly proportional to the temperature. Thus we can write it as:

P/T = a constant.

Gay-Lussacs law is supportive of kinetic molecular theory. As per kinetic theory of gases, as the temperature increases, kinetic energy of particles increases results in forceful collisions of energetic particles to the wall of container and in between them.

Therefore, the temperature - pressure graph will show a linear relationship.  The figure B represents a linear curve and hence it shows the correct relation.

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Answer: C. 0.57 M

Explanation:

Molarity= Moles/Vol

Answer: I don’t think the answer is A or C. Maybe B.

The word chemosynthesis means

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.

Explanation: