PLEASE PLEASE HEELPPPP

Answer:

baking powder and baking soda

Explanation:

I know this from prior knowledge, also the graph shows the two with plus signs on vinegar, which means they both react to it. :)

Baking powder and baking soda

On the table they both have a "+" meaning a reaciton has occured.

Hope this helps, brainliest pls! :)

Answer:

subatomic particles are smaller then atoms

According to the Avogadro's number, the mass of  9.6 x 10²³ atoms of iron is 89.002 g.

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number

Therefore,mass=9.6×10²³×55.84/6.023×10²³=89.002 g

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Answer:

A both

Explanation:

hope this helped

Answer:

Its can affect the safety of products by, for example, if you put raw chicken in the oven and don't cook it for long enough, it can make you sick

Explanation:

The difference between the calculated and precise worth is referred to as an error or defect. For example, if the two machinists use the same device to detect measurement mistakes, it is not necessary that they obtain the same results. However, there will be a little difference between the two measurements, which is referred to as an error.

Answer:

b. share electrons

Explanation:

Answer:

As per Newton's first laws of motion, everybody continues to be at state of rest or of uniform motion in a straight line unless and until it is compelled by some external unbalanced forces acting on it.

Hence, it is the unbalanced force that changes the state of rest or motion of a body. Balanced force is responsible for keeping the body to be either in static equilibrium or in dynamic equilibrium.

As per the options given in the question, the last one is true for an object under balanced forces.

sorry if this doesn't work

Answer:

2 in each

Explanation:

Answer:

A

Explanation:

Protons are positive

Neutrons are neutral

Electrons are negative

Protons and Neutrons are in the nucleus

Electrons are orbiting around the nucleus

The statement that is true about about neutrons is that They have a neutral charge and are found in an atom's nucleus.

Neutrons are electrical charge that is form in the atoms of elements which is neutral that is it's is neither positive or negatively charged.

Neutrons have no charge , they are neutral.

Therefore, The statement that is true about neutrons is that They have a neutral charge and are found in an atom's nucleus.

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Answer:

If you change everything at once, you may not know what caused the end result.

Explanation:

If you have Variable A (Salt), Variable B (Potassium), and the Control of Water, you might mix everything together, so you mix salt, potassium and water together. It is known that Potassium reacts very aggressively in water, but since you mixed everything together, you might think that salt+potassium+water goes boom, while it is actually potassium+water=boom.

Answer:

the answer is the 3rd option

Explanation:

which is 1.26 x 1024 calculating with avogardos law

Answer:

1.26 X 1024 molecules

Explanation:

Answer:

argon

Explanation:

Answer:

Argon

Explanation:

Answer:

1s22s22p63s23p64s23d10

Explanation:

This is the answer to the electron configuration for zinc.

Answer:

203g

Explanation:

Multiply #moles by cobalt's molar mass:

molar mass= 58.9332g/ 1 mole)

3.45 mole Cobalt (58.9332g/ 1 mole)= 203g <-- 3 significant figures

According to the mole concept, mass of 3.45 moles of cobalt is 203.30 g.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Mass of 3.45 moles of cobalt is obtained as, mass=number of moles ×molar mass

Substitution of values gives ,mass=3.45×58.93=203.30 g.

Thus, the mass of 3.45 moles of cobalt is 203.30 g.

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Answer:

Caffeine

Explanation:

In every study, there must be an independent variable and a dependent variable. The independent variable is being manipulated and its effect on the dependent variable is evaluated.

In this study, the independent variable is the administration of caffeine. Its effect on a rat's ability to learn the maze (dependent variable) is evaluated in the study.

Answer:

it should be 0.01

Explanation:

Given parameters:

mass of an empty beaker = 65gm

mass of the beaker and water = 165gm

volume of water = 100cm³

Unknown:

Density of water  = ?

Solution:

Density is the mass per unit volume of a substance;

           Density  = [tex]\frac{mass}{volume}[/tex]

To find the mass of the water ;

   Mass of water  = Mass of beaker and water - mass of an empty beaker

                            = 165g - 65g

                           = 100g

So input parameters and solve;

         Density  =  [tex]\frac{100g}{100cm^{3} }[/tex]  

         Density of the water in the beaker  = 1g/cm³

Answer:

'Sitsiritsit' is a popular folk song of Filipino.

'Atin cu pung singsing​' is a popular folk song of Kapampangan.

Explanation:

'Sitsiritsit' is a popular folk song of Filipino.

The song presents a picture of the rustic life that the people used to live. It focuses on the life of the people during the Spanish colonization.

In the song, a woman yells and threatens at a store owner. She asks him to increase the limit of the credit amount or the ants will get him.

'Atin cu pung singsing​' is a popular folk song of Kapampangan.

The song presents the feelings of a girl who is looking for her lost ring. She feels very gloomy about this. She brings a proposal that whoever would bring her the ring would be her love forever.

Answer:

Luster

Explanation:

Luster is how the surface of a mineral reflects light. It is not the same thing as color, so it crucial to distinguish luster from color. For example, a mineral described as “shiny yellow” is being described in terms of luster (“shiny”) and color (“yellow”), which are two different physical properties.

Answer:

A Minerals Luster

EXPLANATION:

The Minerals luster is how shiny a mineral is. Luster means a shine or radiance of something, like a polished crystal it gives a sheen of light because it is shiny versus a dirty, worn-out crystal.

Explanation:

i think if you add them all the total is 26

Answer:

25 shirts

Explanation:

5+6=11+3=14+5=19+2=21+4=25 (if u dont understand how I wrote that then) 5+6=11, 3+5=8, 2+4=6

11+8=19, 19+6=25

Answer: it’s A

Explanation:

Answer:

It's A

Explanation:

Answer:

A physical property is an aspect of matter that can be observed or measured without changing its chemical composition. Examples of physical properties include molecular weight.

A chemical property may only be observed by changing the chemical identity of a substance. In other words, the only way to observe a chemical property is by performing a chemical reaction

Explanation:

Properties of matter

The properties of matter are classified into; (I) Physical and, (ii) Chemical properties.

Physical properties: A physical property is an aspect of matter that can be observed or measured without changing its chemical composition. Examples of physical properties include molecular weight, density, color, melting and boiling point, etc.

Chemical properties: A chemical property may only be observed by changing the chemical identity of a substance. In other words, the only way to observe a chemical property is by performing a chemical reaction. This property measures the potential for undergoing a chemical change. Examples of chemical properties include and oxidation states, acidic or basic properties, flammability, heat of combustion, etc.

Answer:

sun is the energy that powers the water cycle from

Answer:

D

Explanation:

a precipitate is formed from a solution

Answer: It changed in identity and properties.

Explanation:

Answer:

C: It changed in identity and properties

Explanation:

Hope this helps! good luck :)

Answer:

I think A is the answer Hope I'm right