Can someone help me ❤️❤️❤️

Can Someone Help Me

Answers

Answer 1

Answer:

i think the answer would be C

Explanation:

no matter what you do to the jar the mass will stay the same. unless you add more nails


Related Questions

Vertical columns in the periodic table are called ______ of elements and have similar properties.
groups
period​

Answers

Vertical columns in the periodic table are groups of elements.

3. When aqueous solutions of sodium phosphate (Na3PO4) and chromium(III) chloride (CrCl3) react, chromium(III) phosphate forms as a
precipitate.
Identify the spectator ions and write a balanced net ionic
equation for this reaction.

The ions Cr3+ and PO,?-combine to form the precipitate.
Which two ions are spectator ions?

The net ionic reaction is Cr3+ + PO42 ..

Answers

The four ionic species initially in solution are Na⁺, PO₄³⁻, Cr³⁺, and Cl⁻. Since the precipitate is composed of Cr³⁺ and PO₄³⁻ ions, the spectator ions must be Na⁺ and Cl⁻.

The complete ionic equation is 3Na⁺(aq) + PO₄³⁻(aq) + Cr₃⁺(aq) + 3Cl⁻(aq) → 3Na⁺(aq) + 3Cl⁻(aq) + CrPO₄(s).

So the balanced net ionic equation for this reaction would be Cr³⁺(aq) + PO₄³⁻(aq) → CrPO₄(s).

Answers:

Which two ions are Spectator Ions?

Na+

Cl-

The net ionic reaction is Cr2+PO42...

Cr2(PO4)3

Plz help if you can!
Name these Ionic Compounds: ( Al is Aluminum and Cl is chlorine)
1. AlI3
2. K3N
3. Cs2O
4. CaCl2
5. LiBr

Answers

Answer:

Aluminum Iodide

Potassium Nitride

Caesium Oxide

Lithium Bromide

Explanation:

24
Select the correct answer.
Which statement is correct?
A.
When the concentration of the reactant decreases, the cell potential increases.
B.
When the concentration of the reactant decreases, the cell potential does not change.
C.
When the concentration of the reactant increases, the cell potential decreases.
D.
When the concentration of the reactant increases, the cell potential increases.
E.
When the concentration of the reactant increases, the cell potential does not change.

Answers

Answer:

the answer is b

Explanation:

A mass of 0.30 kg is attached to a spring that has a spring constant of 210 N/m. What will be the period of this system?

Answers

Answer:

its A hope this helps

Explanation:

What is an action citizens can take to prevent energy waste?

Answers

Answer:

Turning the lights off when they're not needed.

Evidence of Earth’s plate tectonic activity is most obvious after an earthquake. Which explanation best describes this plate tectonic movement?
A: Earth’s plates stress one another. However, when an earthquake occurs, plate movement is due to an unbalanced force on the plates.

B: Earth’s plates are moving fast. However, the force of friction slows their movement.

C: The force of gravity causes the floating plates to move up and down. The plate movement sometimes results in earthquakes.

D: Earth’s plates continually place stress on one another. However, the force is balanced during an earthquake.

Answers

Answer:a

Explanation:bc

Plates on Earth are moving quickly. Yet, friction causes them to travel more slowly. So, the correct options are B and C.

What are tectonic plates?

Tectonic plates are enormous fragments of the upper mantle and crust of the Earth. They are composed of both continental and oceanic crust. Earthquakes occur around mid-ocean ridges and the large faults which mark the edges of the plates.

The Earth's plates are shifting swiftly. Nevertheless, friction slows their movement. Gravity causes the floating plates to rise and fall. On occasion, the movement of tectonic plates results in earthquakes.

When compared to the Earth's mantle, the plates behave like solid, unyielding shells. The lithosphere is the name given to this thick outer layer.

Thus, the correct options are B and C.

Learn more about Tectonic plates, here:

https://brainly.com/question/30805154

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PLZ HELP!

Where have you seen or known of examples of waves in YOUR LIFE? Based on science terms of a wave.

Answers

Answer:

QUESTION:

Where have you seen or known of examples of waves in YOUR LIFE? Based on science terms of a wave.

ANSWER:

I've seen the following in my life:

~ Lightwaves

~ Heatwaves

~ Electromagnetic waves

~ X-rays

~ Tsunami Waves

Explanation:

Hope that this helps you out! :)          

If you have any questions please put them in the comment section below this answer.          

Have a great rest of your day/night!          

Please thank me on my profile if this answer has helped you.  

I will mark brainliest if all answered or if you don’t want to answer them all please just answer 9-15

Answers

Answer:

9. b

10.d

11.f

12.g

13.e

14.a

16.a

17.d

18.c

19.a

Explanation:

What are the types of Asexual reproduction?

need this asap bro uyftghjkddfs

Answers

Answer:

The types of Asexual reproduction include:  fission, fragmentation, budding, vegetative reproduction, spore formation and agamogenesis.

which of the following subject area contains questions that can be answered by science?

Answers

Answer:

ASTRONOMY

Explanation:

im taking that test right now

i hope this helps :0

Answer:

forensics

Explanation:

took the test yay

Balance the following equation: AlCl3 + Cs --> CsCl + Al
Group of answer choices

A.2, 6, 6, 2

B.1, 3, 3, 1

C.3, 1, 3, 1

D.2, 3, 1, 3

Answers

Answer: The balanced equation is [tex]AlCl_{3} + 3Cs \rightarrow 3CsCl + Al[/tex]

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example, [tex]AlCl_{3} + Cs \rightarrow CsCl + Al[/tex]

Here, number of atoms on reactant side are as follows.

Al = 1Cl = 3Cs = 1

Number of atoms on product side are as follows.

Al = 1Cl = 1Cs = 1

To balance this equation, multiply Cs by 3 on reactant side and multiply CsCl by 3 on product side.

Hence, now the equation will be as follows.

[tex]AlCl_{3} + 3Cs \rightarrow 3CsCl + Al[/tex]

Here, number of atoms on reactant side are as follows.

Al = 1Cl = 3Cs = 3

Number of atoms on product side are as follows.

Al = 1Cl = 3Cs = 3

Thus, we can conclude that this equation is balanced.

How many moles of O₂ are needed to burn 2.5 moles of CH₃OH?

Answers

Answer:

3.75 moles

Explanation:

The chemical equation is 2CH₃OH + 3O₂ -> 2CO₂ + 4H₂O

2 moles of CH₃OH are burned by 3 moles of O₂

For 2.5 moles of CH₃OH are burned by x moles of O₂

Let's solve for x :

2*x=2.5*3 => 2*x=7.5 => x=3.75 moles of O₂ are needed to burn 2.5 moles of CH₃OH

Can someone please help me with my chemistry hw

Answers

Answer:

a) 18

b)288g

Explanation:

a) 1:4

4.5mol TiCl4 so HCl is 4(4.5mol)

b) mm of HCl is 36

because 1:4 we multiply 2.0 mol by 4

8mol of HCl

we multiply 8mol by 36 (molar mass of HCl) and we get 288g because mol×molar mass= grams

What kind of wave is a sound wave? Why?

Answers

Answer:

Sound waves in air (and any fluid medium) are longitudinal waves because particles of the medium through which the sound is transported vibrate parallel to the direction that the sound wave moves.

plz can i get brainliest:)


What is the volume of a container that contains 12.6 grams of nitrogen at 25°C and 1100 kPa?

Answers

Answer:

1.0 L

Explanation:

Use the ideal gas law PV=nRT where P is pressure = 1100 kPa, V is the volume you are calculating, n is the number of moles which can be calculated by dimensional analysis and the periodic table, R is the ideal gas constant in this case R=8.314 kPa L/K mol, and T is the temperature in kelvins. See attached image for work through. 1.0 L is the answer with two sig figs.

Write two paragraphs about what would happen if your whole body was put in a low pressure environment ?

Answers

Answer:

Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.

Explanation:

Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.


A student makes several observations about a plece of iron. Which observation describes a chemical property of the Iron?

Answers

Answer:rust

Explanation:

No links.
Calculate the pH and pOH of each solution.
a) [H + ] = 1.7 x 10 -8M
b) [H + ] = 1.0 x 10 -7M

Answers

Explanation:

first find the value of Ph

from Ph= -log[H+]

ph=-log[1.7x10^-8]=7.769

find Poh from 14=ph+poh

14=7.769+poh

Poh=6.231 part a

for part b the same as part a from the above procedure

If the hydroxide ion concentration of a solution is 3.26 x 10-6 M, is it an acidic or a basic solution?

Answers

Answer: It is a basic solution with pH =8.51

Explanation:

We were given that hydroxide ion concentration [OH-] as 3.26 x 10-6 M

But We know thar

[OH-] [H+] = 1 × 10^-14

To get the Hydrogen ion [H+] concentration, we have that

[H+] = 1 × 10^-14 M/[OH-]

= 1 × 10^-14 M/3.26 x 10-6 M

    =  3.067 x 10^-9 M

But, pH = - log [H+]

Therefore,

pH = - log (3.067 x 10^-9)

pH=8.51

when  pH > 7, The solution is basic, therefore a solution with pH =8.51 is basic.

Which of the following is true about limiting and excess reagents?

Links are reported

Answers

Answer:

the first one

Explanation:

I take this subject

Can someone help me out with these chemistry balancing equations questions?

Answers

Answer:

C4H6O3 + H2O → 2C2H4O2

C2H4 + 3O2 → 2CO2 + 2H2O

2C4H10 + 13O2 → 8CO2 + 10(H2O)

Explanation:

For this reaction: ____NH3 + ____O2  ____NO + ____H2O a. How many moles of oxygen are needed to react with 3.24 moles of ammonia?

Answers

Answer:

uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh this is hard I'm a come back when I solve it

When balancing chemical equations, it is okay to adjust
(3 points)
A.
coefficients.
B.
superscripts.
C.
subscripts.
D.
any of these.

Answers

Answer:

A

Explanation:

Thats the correct anwers

The correct answer is a dear have a great day

PLEASE HELP!!!
Explain how an electric car might still run on fossil fuels.

Answers

Answer:

Explanation:

When you use electricity to charge your car, you can integrate renewable resources like solar into the fueling process. Without solar, your electric vehicle is still effectively running off of fossil fuels – it's just the fossil fuels utilized at the power plant and not within your engine.

Fossil fuels include substances like natural gas, coal, and oil. It is possible for electric cars to run on these fossil fuels. Fossil fuels like coal are burnt up to generate electricity. So when cars run on electricity, they are indirectly tapping into fossil fuels.

As the world continues to seek measures to reduce carbon emissions, electric cars are gradually becoming an option.

While it is true that these fossil fuels might not be used directly on electric cars, they still find use indirectly in these cars.

When coal is burnt up at the power plant to generate electricity, electric cars tap into fossil fuels indirectly.

Learn more here:

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some plz help me make mnemonic to helpme remember the oder of the planets​

Answers

Answer:

My - Mercury

Very- Venus

Excited- Earth

Mother- Mars

Just- Jupiter

Served- Saturn

Us- Uranus

Nachos- Neptune

Explanation:

Mark me Brainliest?

Answer:

My very encouraging made just us nachos

Explanation:

My stands for Mercury

Very stands for venus

Encouraging- Earth

made- Mars

just- Jupiter

Us- Uranus

Nachos- Neptune

A solution has [OH-]=3.5*10^-6. Based on that, what must be true about this solution?

Answers

Answer:

Option B. It is a basic solution.

Explanation:

To know which option is correct, let us calculate the pH of the solution.

First, we shall determine the pOH of the solution. This is illustrated below:

Concentration of Hydroxide ion, [OH¯] = 3.5×10¯⁶

pOH =.?

pOH = –Log [OH¯]

pOH = –Log 3.5×10¯⁶

pOH = 5.5

Finally, we shall determine the pH. This can be obtained as follow:

pOH = 5.5

pH =?

pH + pOH = 14

pH + 5.5 = 14

Collect like terms

pH = 14 – 5.5

pH = 8.5

The pH scale reads as follow:

0 to 6 => Acidic

7 => Neutral

8 to 14 => Basic

Comparing the pH of the solution (i.e 8.5) with the pH scale, we can conclude that the solution is basic because the pH of solution lies between 8 and 14.

The pressure in a car tire is 178 kPa at 37°C. After a long drive, the pressure is 275 kPa. What is
the new temp of the air in the tire, assuming the volume is constant?

Answers

Answer:

T₂ = 478.93 K

Explanation:

Given that,

Initial pressure, P₁ = 178 kPa

Initial temperature, T₁ = 37°C = 310 K

Final pressure, P₂ = 275 kPa

We need to find the new temp of the air in the tire, assuming the volume is constant. We know that,

[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{275\times 310}{178}\\\\T_2=478.93 K[/tex]

So, the new temperature is equal to 478.93 K.

Argon has a pressure of 34.6 atm. It is transferred to a new tank with a volume of 456 L and pressure of 2.94 atm. What was the volume of the original container?

Answers

Answer:

38.75 L

Explanation:

From the question,

Applying Boyles Law,

PV = P'V'....................... Equation 1

Where P = Original pressure of the Argon gas, V = Original Volume of Argon gas, P' = Final pressure of Argon gas, V' =  Final Volume of Argon gas.

make V the subject of the equation

V = P'V'/P.................... Equation 2

Given: P = 34.6 atm, V' = 456 L, P' = 2.94 atm.

Substitute these values into equation 2

V = (456×2.94)/34.6

V = 38.75 L

Convert 0.64 moles of table salt (NaCl) to grams

Answers

Answer:

0.64 moles of table salt = 37.44 grams of table salt

Explanation:

mNaCl = 0.64 x (23 + 35.5) = 37.44 grams

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