Multiple choice!
:D god

Explanation:

A physical change is one that alters the physical properties of matter (particularly the form and state).

A chemical change is one in which new kind of matter is formed. It is always accompanied by energy changes (evolution or absorption of energy in form of heat or light or both).

Now, the salient differences between physical and chemical changes;

Answer:

The result of a chemical change is a different composition and is often hard to reverse; in a physical change, the composition remains the same and is often easy to reverse.

Explanation:

Explanation:

The lungs pump oxygen in and carbon dioxide out, which goes through the blood stream to help with the cell's energy needs.

Nutrients pass through the blood stream as well. The nutrients start with the digestive system (mouth, esophagus, stomach, small intestine) before going into the blood stream. The nutrients are building blocks to help make new cells when old ones die off.

When those cells die off, the body sheds them like dead skin, but internal dead cells are passed off as waste. This waste and other byproducts the body doesn't need passes through the blood stream as well.

In short, the blood stream is basically the highway to help get desired materials (eg: oxygen and nutrients) and get rid of waste (eg: carbon dioxide and other unwanted byproducts or dead cell material)

So that's why the answer includes A, B and C.

Answer:

441

Explanation:

Answer:

The mechanical device inside just gets the energy of the fuel and not the actual liquid.

Explanation:

The acceleration increases since the mechanical device is getting the energy of the fuel and not the fluid.

Just an idea

The information regarding the acceleration of a model rocket should be explained below;

The following information should be considered:

Learn more: https://brainly.com/question/1979431?referrer=searchResults

Litmus paper and Phenolphthalein are both indicators. This means they will change colour in the presence of an acid or a base.

Litmus paper turns blue in a base and remains red when it is in contact with an acid or neutral solution. Phenolphthalein turns pink in a base, but is coluorless in an acid or neutral solution.

The Scientific Notation of  Xenon’s density : 1.31293 × 10²

Scientific Notation consists of 2 parts

1. the first part: the first digit followed by the decimal point

2. The second part: the power of 10 which shows the number of digits after the decimal point

Xenon's density = 131.293

First digit = 1, then we give the decimal point and the next digit

The power of 10 is determined from the number of decimal points moved from the original decimal point

Because we move the decimal point two digits to the left, the power of 10 has the number 2 (10²)

So that the Scientific Notation form becomes:

1.31293 × 10²

Answer:

4.2 volts per cell.

Explanation:

Answer:

2H₂O₂ → 2H₂O + O₂

Explanation:

H₂O₂ → H₂O + O₂

The above equation can be balance as illustrated below:

H₂O₂ → H₂O + O₂

There are 2 atoms of O on the left side and a total of 3 atoms on the right side. It can be balance by putting 2 in front of H₂O₂ and 2 in front of H₂O as shown below:

2H₂O₂ → 2H₂O + O₂

Now, the equation is balanced.

**** check ****

Element >>> Left Side >>> Right Side

H >>>>>>>>> 4 >>>>>>>>> 4

O >>>>>>>>> 4 >>>>>>>>> 4

Answer:

2 2 then blank

Explanation:

Answer:

The milky waY is the answer

Explanation:

Answer:

D. 12.9 L

Explanation:

Gallon and litter are unit of volume.

Gallon is bigger unit than liter.

1 gallon = 3.78 L

We will convert the gallon into litter by multiplying the given value with 3.78.

3.4 gal × 3.78 L/ 1 gal

12.9 L

Thus, option D is correct.

Answer:

Power lines produce a magnetic field

Explanation:

Power lines produce a type of magnet called an Electro-magnet which pulls metal magnetic objects towards it and the compass relies on magnetic feilds in order to point north.

Answer:

One of the most fantastic displays of electricity in nature is lightning. Lightning occurs when large amounts of electrostatic energy builds up in clouds from the energy of storms. When electrically charged regions of clouds discharge their energy, a large flash of electricity can be seen in the sky.

Answer:

36%

Explanation:

This is the answer on edmentum/plato. Hope this helps. Jesus loves YOU!

Answer:

bacteria, protists, and yeast.

Explanation:Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms

Answer:

find how much gold weighs by volume based on the karat and factor that in to find the answer  

Explanation:

Answer:

[tex]2^5[/tex] or 32

Explanation:

The rule for exponents is that [tex]x^a*x^b = x^{a+b[/tex]. Thus, we have a+b = 5 so the answer is 2^5 or 32

Answer & Explanation:

The sky temperature is just above freezing (34 degrees Fahrenheit or 1 degree Celsius).

The water molecules are sticky and they stick to other water molecules because they are what's called dipole molecules, when you give enough energy to the water molecule, it can break the bonds to the other water molecules, holding it into the water, and it can escape as water vapour. Clouds that bring rain are built up by vapor. The heat of the sun evaporates seawater and produces vapor. The water in the ocean collects all of the salt and minerals from all of the rivers that flow into it.

Answer:

16.3 L

Explanation:

volume of mercury = 0.950 L

density of mercury = 13.546 g/ml

and density of ethanol = 0.789 g/ml

From the given density and volume we will calculate the mass of mercury and then there would exactly same mass of ethanol be there as is mentioned.

we know that, mass = volume x density

So, mass of mercury = 0.950 L x (1000ml/1L) x (13.546g/ml) = 12868.7g

Now we have mass and density of ethanol so it's volume could easily be calculated as volume = mass/density

volume of ethanol = 12868.7g x (1ml/0.789ml) x (1L/1000ml) = 16.31 L

Answer:

record

Explanation:

Answer:

42%

Explanation:

Answer:

B. NEON.

HOPE IT HELPED

Answer:

density of sugar = 1.6 g/cm³

density of oil = 0.87 g/mL

Explanation:

1)

Given data:

Mass of object = 12.9 g

Volume of object = 8 cm³

Density of brown sugar = ?

Solution:

Formula:

d = m/v

d = density of object

m = mass of object

v = volume of object

Now we will put the values in formula.

d = 12.9 g/ 8 cm³

d = 1.6 g/cm³

2)

Given data:

Mass of oil  =  43.5 g

Volume of container = 50 mL

Density of oil = ?

Solution:

Formula:

d = m/v

d = density of oil

m = mass of oil

v = volume of oil

Now we will put the values in formula.

d = 43.5 g/ 50 mL

d = 0.87 g/mL

Answer:

721.9 grams

I hope this helps!

Answer:

copper

Explanation:

did it on e2022

Specific heat capacity of a substance is the amount of heat required to raise the temperature by one degree Celsius of one gram of a substance. Therefore, the correct option is copper.

Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Mathematically, Enthalpy is directly proportional to specific heat capacity of a substances. Different element have different heat capacity.

Mathematically,

q = n ×ΔH

where

q = amount of heat

n = no of moles

ΔH = enthalpy

n = w / M.M

w = given mass

M.M = molar mass

The sheet with lower value of heat capacity, will get warm up the quickest. So, copper is the sheet which is going  to warm up the quickest, and, therefore, bake the cookies the fastest.

Therefore, the correct option is copper.

To know more about enthalpy, here:

https://brainly.com/question/24170335

#SPJ2

Answer:

he do be lookin sus

Explanation:

Answer:

yeah

Explanation:

d

Answer:

C ; Use enough cations and anions so that the total charge is zero

in a stable ionic compound, in order for you to get the formula, you need the positive and negative ions on one side to cancel out the compound, it becomes neutral, by being 0.

i hope that made sense :/

Answer:

c

Explanation: