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what volume is represented by each small tick mark?

Answer:

1.67g/cm3

Explanation:

The formula for density is [tex]d=\frac{m}{v}[/tex] . The m variable stands for mass and the v variable stands for volume.

The mass of the brown sugar is 10.0g and the volume is 6.0cm3, so we can plug those values into the equation.

[tex]d=\frac{10g}{6cm^{3} }[/tex]

[tex]d=1.67[/tex][tex]\frac{g}{cm^{3} }[/tex]

Rounded to 3 significant figures, the density of the block of brown sugar is 1.67 g/cm3. If the mass is in grams and the volume is in cm3, the unit for the final answer is [tex]\frac{g}{cm^{3} }[/tex] (grams per centimetres cubed).

Answer:

16g

Explanation:

Answer:

the mass number

Explanation:

Isotopes are numerous forms of one single element. In simple terms, atomic weights are different for the isotopes. Isotopes refer to the atoms that have the same number of protons but different neutron numbers. The physical properties of the isotopes vary because these properties also based on mass. These variations can be used to distinguish isotopes of an element from each other by applying methods such as fractional distillation and diffusion.

Answer:

The mass number  (D) would be correct.

Explanation:

Explanation:

Charles' law gives the relationship between the volume and the temperature of the gas. Mathematically,

Volume ∝ Temperature

i.e. [tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}[/tex]

We have, V₁ = 1.6 L, T₁ = 278 K, T₂ = 253, V₂=?

[tex]V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{1.6\times 253}{278}\\\\V_2=1.45\ L[/tex]

So, the new volume is 1.45 L.

Answer:

Density = 1.74 gm/mL

Explanation:

Given that:

Mass of piece of Magnesium = 4.80 grams

The volume displaced by this piece = 2.76mL

Let us learn about a property:

Volume of water displaced by a substance when immersed in the water is equal to the Volume of the substance itself.

So, volume of the piece of Magnesium = 2.76 mL

To find:

Density of magnesium = ?

Solution:

Let us have a look at the formula for Density of a Substance:

Density of a substance is given as the ratio of mass of substance and the volume of that mass of substance.

i.e.

[tex]Density = \dfrac{Mass}{Volume}[/tex]

Putting the given values:

[tex]Density = \dfrac{4.80}{2.76}\\\Rightarrow \bold{Density = 1.74\ gm/mL}[/tex]

So, the answer is:

Density of Magnesium = 1.74 gm/mL

Answer:

egg

Explanation:

man

Answer:

it gives  CH2OH-CH2OH(ethylene  glycol +MnO2  

Explanation:

Answer:

3.785e+6

Explanation:

Answer:

The volume of the rock is 2 mL

Explanation:

The level to which the graduated cylinder is filled with water by Abby = 3 mL

The level to which the graduated cylinder after the rock is dropped in = 5 mL

Therefore;

The volume of the rock = The level to which the graduated cylinder after the rock is dropped in - The level to which the graduated cylinder is filled with water by Abby

The volume of the rock = 5 mL - 3 mL = 2 mL

The volume of the rock = 2 mL.

Answer:

analyze data and construct a conclusion  

Explanation:

Answer:

Limitations of Lewis structures: resonance structures and violations of the octet rule (odd electron, hypovalent and hypervalent molecules). (1) Shapes of simple molecules with “central” atoms. (2) Configuration: the position of atoms in space about a central atom. The VSEPR theory of configuration.

Limitations of Lewis dot structure are it will not explain the shape and type of attraction force present within the molecule.

Lewis dot structure of any molecule gives idea about the total number of valence shell electrons present in any molecule.

Limitations of Lewis dot structure:

Hence limitations of Lewis dot structure is discussed above.

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Answer:

(C). is the answer, I think

Fluorine in gaseous form is a substance which has atoms far away from one another has ΔHf as 0 kj/mole.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether  it is solid,liquid , gas is made up  of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral particles  and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:the pic

Explanation:

Answer:

It should be transferred to a Beaker to finish preparing the solution

Explanation:

NaNO₃ is sodium Nitrate. It is a salt that is soluble in water hence it's aqueous solution can be prepared by dissolving it in water.

A beaker is a laboratory glassware that is used for various functions; one of which includes the preparation of reagents or aqueous solutions of a compound. In the example narrated in the question, the measured NaNO₃ solid can be transferred to a 100 mL or 200 mL beaker and then added to it is the desired volume of water to make the solution 100 mL. This solution can then be stirred with a "glass rod"

Answer: No

Explanation:  The snacks did not work because the result of the snails either stayed the same, or decreased.

Answer:

Hey there!

Auto-ionization of water is an ionization reaction in pure water or in another aqueous solution, in which a water molecule, H2O, loses the nucleus of one of its hydrogen atoms to become a hydroxide ion, OH−.

Let me know if this helps :)

Answer:

in pure water, H2O molecules undergo a reaction in which two molecules react in such a way that one molecule give its H+ ion to other molecule and become a hydroxyl ion(OH-) and molecule which gain H+ ion become H3O+ ion.

Explanation:

H2O + H2O ⇄ ( H3O+) +( OH-)

1. Antelope Canyon was formed by the erosion of Navajo Sandstone.

2. The appearance of water is determined

by the way the water molecules are moving.

3. Moist rising air near the Equator cools and condenses into clouds and, later, rain.

Answer:

Mass, m = 19466.7 kg

Explanation:

Given that,

Portland cement concrete (PCC) has a density of 150 lb/ft³

We need to find how many kilograms of PCC are required to cast a cylindrical column 1.15 m in diameter and 7.8 m in height.

Since, 1 kg = 2.205 lb

1 lb/ft³ = 16.018 kg/m³

150 lb/ft³ = 2402.77 kg/m³

Density, [tex]d=\dfrac{m}{V}[/tex]

m is mass of PCC in kg and V is volume of cylinder

[tex]m=d\times V[/tex]

[tex]m=d\times \pi r^2 h\\\\m=2402.77\times \pi \times (1.15/2)^2\times 7.8\\\\m=19466.70\ kg[/tex]

So, the mass of PCC required is 19466.7 kg.

Answer:

THE PRESSURE EXERTED BY THE GAS IS THEREFORE 2.88 atm.

Explanation:

Boyle's law states that at constant temperature, the volume of a given mass of gas is inversely proportional to the pressure of the gas.

Mathematically, P1 V1 = P2 V2

Write out the values of the variables given:

P1 = 2.4 atm

V1 = 1.8 L

V2 = 1.5 L

P2 = unknown

Re-arranging the variables by making P2 the subject of the equation, we have:

P2 = P1 V1 / V2

P2 = 2.4 * 1.8 / 1.5

P2 = 2.9=88 atm

Hence, the pressure exerted by the gas is therefore 2.88 atm

Answer:

Option C. 52.057

Explanation:

The following data were obtained from the question:

Isotope >> Mass number > Percentage

A (Cr-50) > 50 >>>>>>>>>> 4.3

B (Cr-52) > 52 >>>>>>>>>> 83.8

C (Cr-53) > 53 >>>>>>>>>> 9.5

D (Cr-54) > 54 >>>>>>>>>> 2.4

Average atomic mass =?

The average atomic mass of chromium, Cr can be obtained as follow:

Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Atomic mass of Cr = [50×4.3)/100] + [52×83.8)/100] + [53×9.5)/100] + [54×2.4)/100]

= 2.15 + 43.576 + 5.035 + 1.296

Atomic mass of Cr = 52.057

Therefore, the atomic mass of chromium, Cr is 52.057

Answer: C. that there may be more than one way to interpret data

Enge 2020 C is the correct answer

Answer: Matter can exist in three different states, solid, liquid, and gas, based on the way the atoms and molecules are arranged inside them. These three states are known as three different states of matter. In solids, atoms or molecules are tightly bound to one another thereby creating a rigid nature.

Answer:

Its an element.

Explanation:

94 on the periodic table

Explanation:

It is given that,

Water flows over Niagara Falls at the average rate of 2,400,000 kg/s

The average height of the falls is 50 m

We need to find the power of Niagara Falls.

The gravitational potential energy of falling water is given by :

P = mgh

Power is rate of doing work i.e.

[tex]P=\dfrac{W}{t}\\\\P=\dfrac{mgh}{t}\\\\P=\dfrac{m}{t}\times gh[/tex]

We have, m/t =  2,400,000 kg/s

So,

[tex]P=2400000\times 9.8\times 50\\\\P=1.176\times 10^9\ W[/tex]

If the number of bulbs are n that could power 15 W LED, the,

[tex]n=\dfrac{1.176\times 10^9}{15}\\\\n=78400000\ \text{bulbs}[/tex]

Answer:

The specific heat and heat of vaporization of water will be very high.

Explanation:

The strength of the hydrogen bonds and the attractions that they create between water molecules makes it much harder for water to increase in temperature.

This is because the bonds need to be broken before the water can vaporize (heat of vaporization) or increase in temperature (specific heat)

Answer:

I would recommend them becoming an Analytical Chemist because Analytical Chemists examine and identify various elements and compounds to find out the composition, structure, and nature of substances and they determine the concentration of chemical pollutants in soil, water,and air. I would recommend taking inorganic, organic, analytical, and physical chemistry as well as computer science, physics, and environmental science

Iron is magnetic and the other two not, which means a magnet could be used to attract the iron filings out of the mixture, leaving the salt and sand. Salt is water soluble, while sand is not. This means the two can be mixed in water and stirred. The salt will dissolve and the sand will not.

Answer:

4,3,1,2

Explanation:

just did it on edge :)

Answer:

Explanation:

ionic product of water Kw = 10⁻¹⁴

[H⁺] [  OH⁻ ] = 10⁻¹⁴

[H⁺] ² = 10⁻¹⁴

[H⁺] = 10⁻⁷

Water dissociates as follows .

H₂O     ⇄     H⁺      +     OH⁻

                  10⁻⁷M       10⁻⁷ M

pH = - log [H⁺]

= - log [  10⁻⁷ ]

= 7 .

So pH of pure water solution = 7 .

The pH of pure water is 7, which is considered neutral because it is neither acidic nor alkaline.

When pure water ionizes, it produces equal amounts of hydrogen ions (H+) and hydroxide ions (OH-), according to the equation:

H2O ⇌ H+ + OH-

However, the concentration of H+ and OH- ions in pure water is very low, and the product of their concentrations is always equal to a fixed value at a given temperature. This value is 1 x [tex]10^-14[/tex] at 25°C.

The pH of water is a measure of its acidity or alkalinity, and is defined as the negative logarithm base 10 of the hydrogen ion concentration.

In pure water at 25°C, the hydrogen ion concentration is equal to the hydroxide ion concentration, and both are equal to 1 x [tex]10^-7[/tex] moles per liter.

Therefore, the pH of pure water at 25°C is:

pH = -log[H+]

= -log[1 x [tex]10^-7[/tex]]

= 7

Thus, the pH of pure water is 7, which is considered neutral because it is neither acidic nor alkaline.

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