Pleaseee help me on this

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:

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:

D

Explanation:

a precipitate is formed from a solution

Answer:

b. share electrons

Explanation:

Answer: It changed in identity and properties.

Explanation:

Answer:

C: It changed in identity and properties

Explanation:

Hope this helps! good luck :)

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:

1s22s22p63s23p64s23d10

Explanation:

This is the answer to the electron configuration for zinc.

Answer:

sun is the energy that powers the water cycle from

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:

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:

A both

Explanation:

hope this helped

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:

I think A is the answer Hope I'm right

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.

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

When water combines with carbon dioxide in the atmosphere, it will form carbonic acid, which is a weak acid. If this weak acid comes in contact with a rock, it will cause some of the rock to be dissolved. This process can also be referred to as weathering.

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:

argon

Explanation:

Answer:

Argon

Explanation:

Answer:

The mercury with volume of 25 cm³ having weight of 340 g.

Explanation:

Given data:

Density of mercury = 13.6 g/cm³

Volume of mercury = 25 cm³

Mass of mercury = ?

Solution:

We will apply density formula.

d = m/v

13.6 g/cm³ = m/ 25 cm³

m = 13.6 g/cm³ × 25 cm³

m = 340 g

The mercury with volume of 25 cm³ having weight of 340 g.

Answer:

conserve mass.

Explanation:

Answer:

4.05/28=0.144g/ml

Explanation:

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 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:

An electron in the first shell has more energy than an electron in the second shell.

Explanation:

Answer:

2 in each

Explanation:

Answer:

subatomic particles are smaller then atoms