6 A student has a mass of 6.35 x 10^1 kg. What number below is the
equivalent to the student's mass? *
O A. 6.35 x 10^-2 g
B. 6.35 x 10^4 g
O C.635 g
O D. 215 lb.

Answer:

B

Explanation:

Hellium is a gas...

Solids are particles that are packed together

liquids are particles that are together but conforme to their container

gas have space between them and conform to their holder

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of copper = 14.75 cm³

Density = 8.96 g/cm³

The mass is

mass = 8.96 × 14.75

We have the final answer as

Hope this helps you

amount of mass in a given volume

Amount of mass in a given volume perfect describes the meaning of density. Hence option C is correct.

Density is the term used to describe the relation between the mass of the body and their volume. Density is a property that can be used to identify substances. Each substance has a unique density.

Example: wood ball density is less as compared to metal ball because wood ball is less than metal ball.

It describes how much matter is packed into a certain volume.

D = M/V

M =Mass (gram); V = Volume (ml or cm3); D = Density (gram/cm3)

Amount of mass in a given volume perfect describes the meaning of density. Hence option C is correct.

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Answer:

The correct answer is 1.1 kg

Explanation:

From the data provided:

Weight (cup + water)= 2.58 kg

Weght (cup) = 1.50 kg

Thus, we simply calculate the difference between the full cup and the empty cup to obtain the net weight of water:

Weight (water) = Weight (cup + water) - Weght (cup)

                         = 2.58 kg - 1.50 kg

                         = 1.08 kg ≅ 1.1 kg

Answer: chemistry f sucks

Explanation:

bc it's f stupid

Answer:

yes

Explanation:

mmmm

Answer:

The correct answers are:

a) 180 g

b) 93.7 cm³

Explanation:

The density of a substance is the mass of the substance per unit of volume. So, it is calculated as follows:

density= mass/volume

From the data provided in the problem:

density = 0.8 g/cm³

a) Given: volume= 225 cm³

mass= density x volume = 0.8 g/cm³ x 225 cm³ = 180 g

b) Given: mass= 75.0 g

volume = mass/density = 75.0 g/(0.8 g/cm³)= 93.75 cm³≅ 93.7 cm³

Taking into account the definition of density:

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

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

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

In this case, you know that:

Replacing in the definition of density:

[tex]0.8 \frac{g}{cm^{3} } =\frac{mass}{225 cm^{3} } [/tex]

Solving:

mass= 0.8 [tex]\frac{g}{cm^{3} } [/tex] ×225 cm³

mass= 180 g

In summary, the mass of 225 cm³ of ethanol is 180 g.

In this case, you know that:

Replacing in the definition of density:

[tex]0.8 \frac{g}{cm^{3} } =\frac{75 g}{volume} [/tex]

Solving:

0.8 [tex]\frac{g}{cm^{3} } [/tex] ×volume= 75 g

volume= 75 g÷ 0.8 [tex]\frac{g}{cm^{3} } [/tex]

volume= 93.75 cm³

Finally, the volume of 75.0 g of ethanol is 93.75 cm³.

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Answer:

B

Explanation:

If the student needs one gram but so far only has 0.37 grams, then the amount they need is the difference between what they need and how much they already have. 1-0.37=0.63 grams.

...which isn't actually an option because none of them have decimal points but I would say it is B anyway because it is the equivalent ratio and maybe there was a typo.

Hope this helped!

Answer:

The answer is B :)

Explanation:

Answer:

200 meters

Explanation:

if u swim for each end 4 times, and its 50 meters long, 50 x 4 = 200 meters

Answer:

Atoms of same element can combine in more than one ratio to form two or more compounds. Atoms are the smallest unit of matter that can take part in a chemical reaction. The law of definite proportions states that a chemical compound always contains exactly the same proportion of elements by mass.

Explanation:

Hope this helps :)

Answer:

68 degrees fahrenheit

Explanation:

Answer:

0.7 g/cm³

Explanation:

hey there,

< The formula for density is [tex]p = \frac{m}{v}[/tex]  where m = mass, v = volume, and p = density. An easy way to remember the formula is density equals love. I found this easy to remember because p = ♡ and when you think about it, if you split the heart in half through the middle like a fraction, it will make [tex]\frac{m}{v}[/tex] (if you don't understand what I'm saying, try writing it out and you will be able to see what I'm talking about!)

We already know that the block is 253 g so the mass is 253 g.

To find the volume, always multiply the 3 values width, length, and height whenever you are trying to find the volume of a block.

15.24 cm x 6.64 cm x 3.56 cm = 360.25 cm³

Now plug it into the formula.[tex]p = \frac{m}{v}=\frac{253}{360.25} = 0.7 g/cm[/tex]³ >

Hope this helped! Feel free to ask anything else.

Density of a substance is its mass divided by volume. Volume of the cube is calculated to 360.24 cm³ and thus the density of the cube is 0.7023 g/cm³.

Density of a substance is the measure of its mass per volume. Thus mathematically it is the ratio of mass to the volume of th substance. Density of a substance depends on the bond type, mass, volume, temperature and pressure.

The ratio of density of a substance to the density of water is called specific gravity. If the specific gravity is greater than one the body will sink in water and if it is less than one it will float on water.

The mass of the block is given 253 g and the volume can be calculated from the product of length,breadth and height.

Volume = 15.24 cm × 6.64  cm × 3.56 cm

             = 360.24 cm³.

Density = mass/volume

             = 253 g/ 360.24 cm³

             = 0.7023 g/cm³

Hence, the density of the block is 0.7023 g/cm³.

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Answer:

a :Chemical  b : compound

Explanation:

a : it had to be a chemical change because it says "There is no change in

the appearance of the solid, but the reactivity of the material changes.

b : well it would be a compound because it would have to be to make a reaction

There is no change is the appearance of the solid, but the reactivity of the material changes.  In case of question a :Chemical changes occur and in case of question   b : The original material is compound.

A compound is defined as the material that is composed up of two or more elements by chemically combined with each other in a fixed proportion by their mass.

Examples are Water, Sodium Chloride,  Ammonium Chloride etc; They have a fixed melting and  boiling points, a compound can be  changed in chemical reaction and hence the components are mixed in a fixed proportion.

Two primary types of compounds are covalent and ionic compounds as it is bonded  by covalent and ionic bond, the formation of covalent bond occur between two nonmetals, like water or methane. These molecules are neutral and weak.

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(a). law (states a consistently observed phenomenon, can be used for prediction); (b). theory (a widely accepted explanation of the behavior of matter); (c). hypothesis (a tentative explanation, can be investigated by experimentation)

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Answer:

Electrode potential is the electromotive force to the galvanic cell built standard.

Explanation:

Electrode potential is the convention electrode is the standard hydrogen electrode to the value zero potential.

Answer:

In electrochemistry, electrode potential is the electromotive force of a galvanic cell built from a standard reference electrode and another electrode to be characterized.

Answer:

v=50km/hr

Explanation:

Given:

s= 300km

t= 6 hours

Required:

v=?

Formula:

v=s/t

Solution:

v=s/t

v=300km/6h

v=50km/hr

Hope this helps ;) ❤❤❤

Answer:

Explanation:

Because it's in your hands and there so small that a  scientist would need a  full scan from the body

Explanation:

hope this will help you

Answer:

It takes 62863 dimes to equal the height of the Statue of Liberty.

Explanation:

If the Statue of Liberty is 305 ft tall and a coin is 1.35mm thick, how many coins will it take to equal the height of the statue?

Convert 305 ft to mm:

1 ft = 30.48 cm

305 ft = 9296.4 cm

92 964 mm

Now, if a dime is 1.35 mm thick, how many dimes will it take to get to 92 964 mm?

1 dime = 1.35mm

X dimes = 92964 mm

X coins = 92964 / 1.35

X = 62863 dimes

Answer: C- they alternately compress and pull apart the particles in matter

A -they ate the first waves detected after and earthquake

Explanation:

Answer:

A&C

Explanation:

APEEXX

Answer:

1.34 cubic centimeter

Explanation:

v = m/d

Answer:

calcium=20

gold=79

copper=29

iron=26

Explanation:

Answer:

The atom

Explanation:

Answer:

the answer is 35mg and 58ml

Answer:

Option B.

Explanation:

Isotopy is a phenomenon where by two or more atoms have the same atomic number (proton) but different mass number due to the difference in neutron present in the atoms. The atoms that exhibit Isotopy are isotopes.

With the above information, we can obtain the right answer to the question given above as follow:

For option A:

Isotope >> atomic no >> Mass no

16 8X >>> 8 >>>>>>>>> 16

16 6X >>> 6 >>>>>>>>> 16

Since they have the different atomic number, they are not isotope.

For option B:

Isotope >> atomic no >> Mass no

16 8X >>> 8 >>>>>>>>> 16

17 8X >>> 8 >>>>>>>>> 17

Since they have the same atomic number but different mass number, they are isotope.

For option C:

Isotope >> atomic no >> Mass no

12 6X >>> 6 >>>>>>>>> 12

14 7X >>> 7 >>>>>>>>> 14

Since they have different atomic number, they are not isotope.

For option D:

Isotope >> atomic no >> Mass no

6 26X >> 26 >>>>>>>>> 6

26 6X >>> 6 >>>>>>>>> 26

Since they have different atomic number, they are not isotope.

From the above illustration, only option B contains isotopes because the atoms have the same atomic number but different mass number

Answer:

C and D

Explanation:

In the first table, both element particles have more electrons than protons which is unusual and indicates they have a negative charge. Furthermore both numbers add up to full electron shells (2,8 and 2,8,8) meaning they are ions (charged particles formed to gain full valence shells and become stable), so it is C for the first question, negative ions.

As for the second one, isotopes like versions of the same element except with different numbers of neutrons, so they are still the same element but have different mass. As shown here the numbers indicate the number of neutrons therefore it is D, 3 more neutrons and no more electrons.

Hope this helped!

Answer:

air that moves from high pressure to low pressure