20 point for right answer

Answer:

No, you have more mass of substance B

Explanation:

use d =m/v to find mass

m= d*v

mass A = 18.5 g/mL * 2.00 mL = 37 g

mass B = 35.5 g/mL * 5.00 mL = 177.5 g

No, the substances A and B does not have equal mass. A further explanation is provided below.

Given:

Density,

Volume,

As we know,

→ [tex]Mass = Density\times Volume[/tex]

The mass of substance A will be:

→ [tex]m_A = 2.00 \ mL\times 18.4 \ \frac{g}{mL}[/tex]

         [tex]= 2.00\times 18.4 \ g[/tex]

         [tex]= 36.8 \ g[/tex]

The mass of substance B will be:

→ [tex]m_B = 5.00 \ mL\times 35.5 \ \frac{g}{mL}[/tex]

         [tex]= 5.00\times 35.5 \ g[/tex]

         [tex]= 177.5 \ g[/tex]

We can see that [tex]m_A \neq m_B[/tex].

Thus the above response is correct.

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Answer:

ii. Purpose of scientific method

=The Scientific Method helps you put together experiments, use data to find conclusions and interpret them. In short, the Scientific Method is a step-by-step process: First, observe. Use your senses and take notes about the situation

The aim of all scientific methods is the same which is used to analyze the observation made at the beginning. It has been seen that various steps are adopted per the requirement of any given observation. Observation is the first step of scientific method.

The process with the help of which scientists try to investigate, verify or construct an accurate and reliable version of any natural phenomena is defined as the scientific method. They are done by creating an objective framework for the purpose of scientific enquiry.

The purpose of scientific method is to provide discrete steps for analytically answering a research question. It involves the formulation of hypotheses and application to come up with logical explanations.

The scientific method establishes the facts through testing and experimentation. It involves prediction, conducting experiment and last analyze the results.

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Answer:

The branch of knowledge dealing with engineering or applied sciences is called technology .

Hope this helps you!

Answer:

fluorine

Explanation:

because it is at the top of the halogen group, which is the second to right group on the periodic table. With halogens, the higher an element is in the column, the more reactive it is. Halogens are reactive because the outer shells that orbit the nucleus lack electrons.

also because it has low dissociation energy and the valence bonding is seen close to the nucleus hence the attraction for a new electron is greater and can gain an extra electron more easily.-if ur in a higer grade u will understand this

Answer:

Any two used of mixtures are 1) sand and water 2) sugar and salt

Explanation:

Answer:

D=1.56g/mL

Explanation:

Density=m/v

D=14.06g/(24mL-15mL)

D=14.06g/9mL

D=1.56g/mL

Answer:

in the part of material and also its gaining to support almost imaginary for all over of this things

Answer:

Use the edit icon to pin, add or delete clips.

Explanation:

hfdknvd hcde

The equality of both units (i.e. mL and ounces) implies they measure the same quantity, and they can be converted between one another.

Given that:

[tex]1 fl\ oz = 29.7mL[/tex]

The measurement in part A is not given. So, I will use an assumed value to provide an explanation.

Assume that the amount of water measured using the measuring cup in part A is 10mL

The equivalent number of ounces (x) is calculated as follows:

[tex]1 fl\ oz = 29.7mL[/tex]

[tex]x = 10mL[/tex]

Cross multiply

[tex]x \times 29.7mL = 1fl\ oz \times 10mL[/tex]

Cancel out common units

[tex]x \times 29.7 = 1fl\ oz \times 10[/tex]

[tex]x \times 29.7 = 10fl\ oz[/tex]

Divide both sides by 29.7

[tex]x = \frac{10}{29.7}fl\ oz[/tex]

[tex]x = 0.3367 fl\ oz[/tex]

Approximate to the nearest half

[tex]x = 0.5 fl\ oz[/tex]

This means that the equivalent amount of water is 0.5 ounces

What if the measurement is 55mL.

We apply the same steps, as follows:

[tex]1 fl\ oz = 29.7mL[/tex]

[tex]x = 55mL[/tex]

Cross multiply

[tex]x \times 29.7mL = 1fl\ oz \times 55mL[/tex]

Cancel out common terms

[tex]x \times 29.7 = 1fl\ oz \times 55[/tex]

[tex]x \times 29.7 = 55fl\ oz[/tex]

Divide both sides by 29.7

[tex]x= \frac{55}{29.7 }fl\ oz[/tex]

[tex]x= 1.85185 fl\ oz[/tex]

Approximate to the nearest half

[tex]x = 2fl\ oz[/tex]

This means that the equivalent amount of water is 2 ounces

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Answer:

Physical change

Explanation:

As no new substance is formed

Answer:

Cl² is dichlorine

Explanation:

.mark me as brainliest ❤️

Answer:

The definition of tentative is not definite or final. An example of tentative is possible, though not definite, plans to go to the movies sometime on Friday.

The product at the negative electrode is not always a metal because it will only be produced if it is less reactive than hydrogen.

These are materials which donate electrons in a chemical reaction and have high heat and electrical conductivity.

Metals are more reactive than hydrogen which is why it is not always produced at the cathode.

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Answer:

All are periodic changes

[And is that a todoroki pfp, I like MHA too

(・∀・) ]

Answer:skin cream

Explanation:

the independent variable is the variable that is always changed or manipulated. in this case the skin cream is the independent variable.

what grade is this because apparently i like to know what grade it is before i solve it

Explanation:

When you heat the air it expand its volume, but its mass remain the same, so the density of the hot air balloon is smaller than the density of the air outside it, so the hot air balloon can float.

In the case of the helium balloon, there's no source of energy, but the helium is naturally lighter than the atmospheric air, so its density is naturally smaller than the air, and the helium balloon have a smaller density than the air too, so it can float.

A closed system can interchange energy with its surrounding, but not matter.

In conclusion, a closed system can interchange energy with its surrounding, but not matter.

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Answer:

Calcium is more reactive.

Explanation:

It is higher in the reactivity series, and contains more energy levels.

Answer:

No

Explanation:

No, his mass remains the same no matter where he is in the universe.

But then again the moon has less gravitational pull, therefore your weight and mass will be smaller in space and on the moon than on earth

I hope this was helpful! ;)

Answer: should be c. clouds :)

Explanation: condensation is the change of water to a gaseous form. it generally occurs in the atmosphere when warm air rises, cools, and loses its capacity to hold the water vapor. excess water vapor condenses to form cloud droplets.

Answer: clouds

Explanation: theyre air and water

Answer:

An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner part being folded inwards to form layers (cristae).

Explanation:

Answer:

Base Alkali

1)All bases are not alkali 1)All alkali are bases

2)It neutralizes acids 2) It releases OH- ions, accepts a proton

3)Example: Zinc hydroxide, copper oxide 3)Example: potassium hydroxide, sodium hydroxide

Answer:

Because law of momentum, makes it equal

Answer:

C

Explanation:

A molecule is a smallest particle of a substance that has all of the physical and chemical properties of that substance. or

Molecules are two or more atoms chemically joined together.

Answer:B

Explanation:

Because that vaccine can help from people dieing.