How have batteries gotten better over time

Answer:

B. more it will warp space

Explanation:

Answer:

to make sure that you change one factor at a time while keeping all other conditions the same.

Explanation:

Answer:

A test with the same control variable

Explanation:

Say you're testing mentos and coke, you have to use the same type of mentos and coke to keep it fair. the only thing you change is the independent variable which would be the number of mentos in this case.

Answer:

In order to develop a healthy, working hypothesis it's best to work within the lines of: If _______, Then ______, as an act of if, being the input (independent) variable and then being the output (dependent).

Answer:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. ... A chemical property describes the ability of a substance to undergo a specific chemical change.

Explanation:

Answer: The circulatory system.

Explanation: The circulatory system, which is part of the "cardiovascular" system, is one of the eleven organ systems of the human body. Its main function is to transport nutrients to cells and wastes from cells (Figure 3.4. 1). This system consists of the heart, blood, and blood vessels.

The blood cells carry nutrients from food to the rest of the cells in the body.

The human circulatory system moves important nutrients and minerals throughout the body and metabolic waste products out from the body. The human circulatory system contains blood, blood vessels, heart, and lymph.

The human circulatory system provides essential nutrients, minerals, oxygen, and hormones to different parts of the body and is responsible for collecting toxins from the cells and tissues to be purified or eliminated from the body.

The human circulatory system contains a wide network of blood vessels. These constitute arteries, veins, and capillaries. The primary function of blood vessels is to transport nutrients and oxygenated blood to all parts of the body.

The Circulatory system helps in sustaining all the organ systems and transports blood, nutrients, oxygen, and hormones throughout the body. It secures cells from pathogens and acts as an interface for cell to cell interaction.

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Answer:

n the sciences, the “tools” for measuring the volumes of liquids are generally made from glass, plastic or occasionally metal, although professionals referred to all of them as “glassware.” Scientists, and chemists in particular, have a variety of glassware at their disposal for measuring volumes. The particular piece of glassware chosen in any situation will depend primarily upon two factors: the required volume and the accuracy required for the measurement.

Explanation:

Hope this helps leave a heart c:

Answer:

I will assume that you mean

STP (Standard Temperature and Pressure)

21

3

≈

7 L

Explanation:

Since we know that

1 mole

of an ideal gas occupies

22.4 L

at

STP

then can establish the following relationships:

22.4 L

1 mole

or

1 mole

22.4 L

Knowing that, we can solve for the volume occupied by the helium gas,

0.35

mole

1

⋅

22.4 L

1

mole

=

7.84 L

as

7.84 L

−

−

−

−

−

The answer makes sense because if

1 mole

occupies

22.4 L

, then

0.35 moles

(roughly a third of the moles) will occupy a third of

22.4 L

(

if we round down 22.4 L to 21 L

)

−

−

−

21

3

≈

7 L

The volume occupied by 0.34 moles of Helium Gas is 7.62 L.

Any gas from the  group of rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates. — called also inert gas.

They have properties tending to an ideal gas.

It is asked that what volume will be occupied by  0.34 moles Helium Gas

The ideal gas equation is written as

PV = nRT

At STP , T = 273 K

P= 1atm

R = 0.0821 L(atm) mol⁻¹K⁻¹

Substituting the values

1 * V = 0.34 * 0.0821 * 273

V = 7.62 L

Therefore the volume occupied by 0.34 moles of Helium Gas is 7.62 L.

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Answer:

Answers in explanation.

Explanation:

30. A (A chemical changes changes the chemical properties)

31. C (rusting is an example of a chemical change

32. B (A reaction requires energy, so some energy will be expelled)

33. B (Color change is an example of a chemical change)

34. A (The law of the conservation of mass: Mass and Energy cannot be created nor destroyed)

Answer:

7.20 kg/L

Explanation:

Density is mass (kg) / volume (L).

18.00kg/2.50L = 7.20 kg/L

If you need it in g/mL this is the equation:

[tex]\frac{7.20kg}{L} *\frac{1000g}{1kg} *\frac{1L}{1000mL} = 7.20g/mL[/tex]

Answer:

sugar and oxygen and nutrients

Explanation:

Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body.

Answer:

You will change which food dye is used. You will measure how quickly the dyes diffuse. You could use a timer to see how long the dye takes to completely diffuse.

The information regarding the change in the variable should be described  below:

The following information should be considered:

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Answer:

B I think

Explanation:

Answer:

B, I'm guessing by their characteristics

Answer: It is made up of one element

Answer: it is made up of 2 elements.

Explanation:

Ca and Cl are each there own element.

Answer:

See explanation below

Explanation:

Let's recall what's the law of acceleration.

First of all, the acceleration is a vector that has the change of velocity in function of the time.

Now, the law of acceleration is related to Newton's Second law which states that an object will move only if there are forces around it. In other words, the following expression:

F = m . a

Now, in this case, we know that the acceleration of an object is affected by a force always. So, if an object stand still, it will not move unless you push it or pull it to move, and the acceleration will speed up or down depending of the force it was exerted.

According to this, the law of acceleration can be applied here:

1. A bike going down a hill. Of course, because, let's suppose you let a bike alone go down on a hill, you will see that the speed of the bike will be faster as time goes by. This is because the force acting here is the weight of the bike and gravity.

2. Dropping a ball from a building. In this case, you drop a ball from a high floor on a building, it will happen the same thing as the bike. It will go faster because of gravity.

3. Putting the break on a car. Now in this case it's easy because you only need to know that when you put the brakes, the speed of the car will go down, but also the acceleration. So there's no need of a further explanation of this.

Hope this helps

Answer:

SAme. What's le question, I will answer correctly.

Explanation:

Answer:

People could choose to practice organic farming, heirloom plants, or use GMOs.

Governments could pass laws to limit the use of monoculture farming.

Governments could pass laws requiring people to use alternate farming methods.

Get that 100.

person above is correct give them brainliest

Answer:

Revolution that is it

Answer:

the internal force of attraction between the particle or molecules.

In solids the force is max.

In liquid it is intermediate.

And least in the gases..

Answer:

V= 12mL

Explanation:

you had the right idea with your Significant figures however, when we divide we see that it requires 2 significant figures as our least amount. this is because when looking at our division, 62 has 2 sig. fig. while 5.35 has a total 3. when looking at your answer we see that you had a total of 3 sig. figures. so in actuakity you had to round up to 12 and not to the tenths because the decimal makes .6 count as your third sig fig.

Answer:

The area of the block is 150 cm

Explanation:

Answer:

B

Explanation:

The attraction is stronger when the magnet is closer so moving it away would decrease the strength.

Answer:

[Rn]7s25f14

Explanation:

[tex][Rn]5f^{14}7s^2[/tex] is the electron configuration for nobelium (No).

Explanation:

Given:

The element nobelium.

To find:

The electronic configuration of nobelium

Solution:

The atomic number of nobelium is 102.

The number of protons = Atomic number = 102

The number of electrons = Number of protons = 102

There are 102 electrons in atom nobelium and they will be filled according to the Aufbau rule that the electron will be filled in a subshell with lower orbital energy.

The electronic configuration of nobelium :

[tex][No]=1s^22s^22p^63s^23p^63d^{10}4s^24p^64d^{10}5s^25p^64f^{14}5d^{10}6s^26p^65f^{14}7s^2[/tex]

Or we can also write the above electronic configuration as:

[tex][No]=[Rn]5f^{14}7s^2[/tex]

[tex][Rn]5f^{14}7s^2[/tex] is the electron configuration for nobelium (No).

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Answer:

1.17x107m

Explanation:

Answer:

λ  = 3.0 × 10⁻¹² m

Explanation:

Speed of Light = Wavelength × frequency

c = λν

Step 1: Define

c = 3.0 × 10⁸ m/s

λ = unknown

ν = 1 × 10²⁰ Hz

Step 2: Substitute and Evaluate for λ

3.0 × 10⁸ m/s = λ · 1 × 10²⁰ Hz

λ = 3.0 × 10⁸ m/s ÷ 1 × 10²⁰ Hz

λ  = 3.0 × 10⁻¹² m

Answer:

it drifts through the atmosphere and the vapor absorbs heat then the warm air rises up therefore leaving the planet's surface and releasing the heat back into the upper part of the atmosphere

Answer:

it is ductile

Explanation:

because malleability is made into thin sheets