pls help me pls cuz i need a good grade

Pls Help Me Pls Cuz I Need A Good Grade

Answers

Answer 1
Independent variable is the one you change so…
C is the answer

Related Questions

Describe how the production of a gas (carbon dioxide) suggests a chemical change
occurred?

Answers

When matter changes it is considered a chemical change. For example if a liquid or solid changes to a gas it indicates a chemical change because the atoms that make up the substances are undergoing change.

Which list includes only bulk properties of matter?
boiling point, strength of electrical forces, vapor pressure
kinetic energy, strength of electrical forces, vapor pressure
boiling point, surface tension, vapor pressure
boiling point, kinetic energy, surface tension

Answers

The list which includes only bulk properties of matter is: C. boiling point, surface tension, vapor pressure.

What is matter?

Matter can be defined as anything that has mass and can occupy space.

Thus, any physical object or substance that is found on planet Earth is typically composed of matter.

The three (3) states of matter:

Since all matter are made up of atoms, they have a property of existing in three (3) distinct states and these include;

SolidGasLiquid

A bulk property of matter refers to the property that affects matter as a whole and they are listed as follows:

1. Stress

2. Strain

3. Elasticity

4. Boiling point

5. Surface tension

6. Vapor pressure

In conclusion, the other list of properties are not a bulk property of matter.

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What do you already know about throwing a curveball?​

Answers

Answer: You have to have good mechanics as well as the curve with velocity and speed.

The MLB Pitchers you see can be an example.

Commentators yelling Nasty Curveball, Strikeout!!

Help me please! I’m
In my own breakout room doing this like the other kids NOW HELP!

Answers

Answer:

Sun

Explanation:

Answer:

earth

Explanation:

why don't birds get electrocuted when they land on the electric wire?​

Answers

Answer:

Birds can sit on power lines and not get electric shocks because the electricity is always looking for a way to get to the ground. The birds are not touching the ground or anything in contact with the ground, so the electricity will stay in the power line.

Pls mark as brainliest answer if it helps you

help me please????? ​

Answers

It’s rise and cool because when they heat up, the expand and when they cool down, they fall down.

A 1,100 kg car comes uniformly to a stop. If the vehicle is accelerating at 2 1.2 m/s , which
force is closest to the net force acting on the vehicle?
F 9,600 N
G 1,300 N
H 900 N
J 94 N

Answers

G. ………………………. . Z z… z z z z z z z z

According to the following map, what is a type of mineral found in Mexico?

a | Bauxite

b | Copper

c | Gold

d | Zinc​

Answers

Answer:

B) copper

Explanation:

According to the map, iron, silver, and copper are found in Mexico. That makes B) copper your answer, as it is the only one that shows up for both the answer choices as well as the map.

calculate the number of moles of ethanol acid in 30 cm³of 1 mol dm-³ solution ​

Answers

Answer:

May I assume "ethanol acid is just ethanol (it has one slightly acidic H atom).  If so, the molar mass is 46.02 g/mole.

Explanation:

We have 30 cm^3 [30 ml] of 1.0 M (1 mole/liter)  [1 dm³ = 1 liter].

That is 1 mole/liter.  30 ml would contain (0.030 liter)*(1 mole/1 liter) = 0.03 moles.

How many protons,neutrons and electrons make a hydrogen atom

Answers

Explanation:

A hydrogen atom has an atomic number of 1.

So it's proton number will always be 1.

A neutral hydrogen atom does not have any charge.

So it has the same amount of electrons as protons, which turns out to be also 1.

A neutral hydrogen atom has an atomic mass of ≈1.00794amu≈1amu.

To find the amount of neutrons, we take the proton number and subtract it from the mass number.

1−1=0

So a neutral hydrogen atom has no neutrons.

In summary,

A hydrogen atom has

1 proton

1 electron

0 neutrons

another way of explaining:

The number of protons is the atomic number, and the number of protons plus neutrons is the atomic mass. For hydrogen, the atomic mass is 1 because there is one proton and no neutrons. For helium, it is 4: two protons and two neutrons

Why was the creation of element 114 so special?

Answers

Answer:

It is classified as a metal and is expected to be solid at room temperature.

Explanation:

not sure but i guess it is that

how many grams of lead (ii) iodide will be precipitated by adding sufficient Pb(NO3)2 to trace with 630mL of 0.268M Ki solution?
2KI(aq)+Pb(NO3)2(aq) → PbI2+2KNO3(aq)​

Answers

The mass of PbI2 produced from a trace amount of 630mL of 0.268M KI solution is 39.2 g.

The equation of the reaction is; 2KI(aq)+Pb(NO3)2(aq) → PbI2(s) + 2KNO3(aq)​

From the question, number of moles of KI = 630/1000 L × 0.268M = 0.169 moles

Now;

2 moles of KI is required to precipitate 1 mole of PbI2

0.169 moles of KI is required to precipitate 0.169 moles × 1 mole/2 moles

= 0.085 moles

Mass of PbI2 = Number of moles of PbI2 × Molar mass

Mass of PbI2 = 0.085 moles × 461.01 g/mol

Mass of PbI2 = 39.2 g

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1) Calculate the average speed in meters/minute for the trip represented
by the walk graphed here.
e
A) 0.5m/min
B) 1m/min
C)
5m/min
nber as you
D) 30m/min
has only
quantity and has
2) What is the average velocity of the person taking this walk?

Answers

Answer:

in physics we never work with minutes only seconds.

What type of rays result in shorter days? (science)

Answers

Answer:

verical rays

Explanation:

The rays result in shorter days are the vertical rays.

What are vertical rays ?

Vertical rays are another name for direct rays. Rays that are straight overhead are referred to as vertical. Because the Earth is spherical, not all the Sun's rays hit it directly or vertically.

Vertical rays lose less heat because they cover a shorter distance. Slanted rays cover more ground and dissipate more heat. Sun's vertical rays fall between the Tropics of Cancer and Capricorn, along its migratory belt.

The length of a day is determined by the Earth's rotation around its axis, which has been accelerating during the past several decades. Our days have been becoming shorter due to this tendency.

Thus, vertical rays are responsible for shorter days.

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a car accelerates from rest(zero speed) up to a spees of m/s to a speed of 30 m/s in 12 seconds. calculate the acceleration.​

Answers

acceleration = 2.5m/s^3

1. What is the specific heat of a substance that requires 270 J of energy to raise the temperature of 4.2 grams by 25°C?​

Answers

Heat required is mcΔT=100×0.39×50=1950 J

Solve any question of Thermodynamics with:-

The specific heat of the substance that requires 270 J of energy to raise the temperature is 2.57 J/g⁰C.

Specific heat capacity of the substance

The specific heat capacity of the substance is calculated as follows;

Q = mcΔФ

where;

c is the specific heat capacity

c = Q/mΔФ

c = (270) / (4.2 x 25)

c = 2.57 J/g⁰C

Thus, the specific heat of the substance that requires 270 J of energy to raise the temperature is 2.57 J/g⁰C.

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what is the name of an orchestra that performs the ceremonial music of the royal courts and templates of cambodia
a.ankor wat
b.oneat
c.pinpeat
d.samphor​

Answers

Answer:

pinpeat

According to 3 sources

The pinpeat (ពិណពាទ្យ) orchestra or musical ensemble performs the ceremonial music of the royal courts and temples of Cambodia. The orchestra consists of approximately nine or ten instruments, mainly wind and percussion (including several varieties of xylophone and drums)

Explanation:

PA BRAINLIEST

A sample of SO2 gas occupies 45.6 L at 373 K and 3.45 atm. How many moles of oxygen atoms?

Answers

Answer:

10.3

Explanation: i have this as a assignment rn sooo here you go :)

how do atoms achieve noble-gas configurations in single covalent bonds

Answers

Elements forming covalent compounds achieve noble gas configuration by sharing electrons within the atoms, unlike ionic compounds which achieve the noble gas configuration either by gaining or losing electrons from the outermost electron shell.

Answer:

by sharing an electron

Explanation:

each of the two bonded atoms share an electron....making a single covalent bond b/w the two....like in....F - F

please help me with this question as it's really important ​

Answers

Answer:

(i)

A → CH3CH2CH3 ( Propane )

B → CH3CH(Cl)CH3 ( 2-Chloropropane )

C → No product

D→ CH3CH=CH2 ( 2-propene )

E → CH3CH2COOH ( Propanoic acid )

(ii)

Reagent X → Acidified water [ H+ / H2O ]

Reagent Y → Bromine with Carbon tetrachloride [ Br2 / CCl4 ]

Reagent Z → Sodium hydroxide [NaOH]

a stone is projected horizontally with 20 metre per second from the top of a tall building calculate its position in velocity after 3 seconds neglecting the air resistance .​

Answers

Answer:

105m

Explanation:

u=20m/s

g=10m/s^2

t=3s

s=ut+1/2gt^2at

s=20*3+1/2*10*3*3

s=105m

(6) Predict the number of valence electrons for each of the following elements (4 pts)
(a) P
(b) Ar
(c) c
(d) Ni

Answers

Answer:

P = 5, Ar = 8, C = 4, Ni = 2

Explanation:

All these answers can be based off which column of the periodic table each element is in. This does exclude the transition medals in between the 2nd and 13th columns. Column 1 = 1, Column 2 = 2, Column 3 = 3 and so on. Transition metals can be determined based on their electron configuration, which in this case, Ni has 2 electrons in its outer most shell.

An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What are its atomic number, atomic mass, and net charge?

Answers

Answer:

Atomic number: 26

Atomic mass: 56

Net charge: +3

Explanation:

A 0.100 g sample of phosphoric acid (H3PO4, MW 99.0 g/mol), a tri-protic acid, requires 35.0 mL of a NaOH solution for neutralization. What is the molarity of the NaOH solution

Answers

Answer:

0.0866 M

Explanation:

answer key

The molarity of the NaOH solution has been 0.0865 M.

The neutralization reaction of the Phosphoric acid and NaOH results in the formation of sodium phosphate and water.

The balanced chemical equation can be given as;

[tex]\rm H_3PO_4\;+\;3\;NaOH\;\rightarrow\;Na_3PO_4\;+\;3\;H_2O[/tex]

Thus for the neutralization of 1 mole of Phosphoric acid, 3 moles of NaOH has been used.

The moles of phosphoric acid in 0.100 grams sample:

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Moles of phosphoric acid = [tex]\rm \dfrac{0.100}{99}[/tex]

Moles of phosphoric acid = 0.001 mol

For the neutralization of 0.001 moles of NaOH:

1-mole Phosphoric acid = 3 moles NaOH

0.001-mole Phosphoric acid =0.003 moles of NaOH.

The molarity of the NaOH solution:

Molarity = [tex]\rm \dfrac{moles}{Volume\;(L)}[/tex]

Molarity of NaOH = [tex]\rm \dfrac{0.003}{0.035}[/tex]

Molarity of NaOH = 0.0865 M

The molarity of the NaOH solution has been 0.0865 M.

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What is the wavelength, in nm, of the light photon emitted by a hydrogen atom when an electron goes from n

Answers

Answer:

Hence, the wavelength of the photon associated is 1282 nm.

Explanation:

During ionization, metals lose electron, this change is called?​

Answers

Ans

This is called oxidation

Explanation:

the oxidation number of a metal ion is more than the oxidation number of metal atom

How many grams of solute are needed to order to prepare 100.00 mL of a 0.1000 M solution of a compound with a molecular weight of 350.0 g/mol

Answers

Answer:

i got 35 but i am as lost as you are so don't really take my answer as a trusted answer

The grams of solute are required.

The mass of solute is 3.5 g

c =  Molarity = 0.1 M

M = Molar mass = 350 g/mol

V = Volume of solution = 100 mL = 0.1 L

n = Number of moles

m = Mass of solute

Molarity is given by

[tex]c=\dfrac{n}{V}\\\Rightarrow n=cV\\\Rightarrow n=0.1\times 0.1\\\Rightarrow n=0.01\ \text{moles}[/tex]

Molar mass is given by

[tex]M=\dfrac{m}{n}\\\Rightarrow m=Mn\\\Rightarrow m=350\times 0.01\\\Rightarrow m=3.5\ \text{g}[/tex]

The mass of solute is 3.5 g

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1. A box of hardware contains 100 pieces. Assuming there are 25 pieces in each vial, calculate the
mass of a box of each kind of hardware. Express these values in units of g/box

Answers

Answer:

fofo you for your patience and

The question is incomplete.

Following things are required to solve the question:-

Mass of the vileMass of the pieces

Without the information we can not solve the question. Therefore, please provide with the incomplete information.

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Which statements accurately describe elements? Check all that apply.

Elements are made up of two or more types of atoms.
Elements are made up of only one type of atom.
Each element has a unique chemical symbol.
Elements can be identified by their atomic number.
One element cannot be combined with another element.

Answers

Answer:

Elements are made up of only one type of atom. Each element has a unique chemical symbol. Elements can be identified by their atomic number.

Explanation:

HELP!!!! I need help with number 11 and 12

Answers

Answer:

V1/n1 = V2 /n2

0.236/0.306 = V2/ 4.40

V2 = 3.39 L

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