Can someone help me please

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 45 g

volume = 4 mL

Substitute the values into the above formula and solve for the density

We have

[tex]Density = \frac{45}{4} [/tex]

We have the final answer as

Hope this helps you

Answer: correct answer is C

Parentheses around the atoms in the ion an then added a subscript

Explanation:

A P E X

Answer:

5.928 x 10^3 km

Explanation:

Answer:

Atomic elements exist with a single atom as their basic unit.

H, F, and P are some examples of atomic elements.

H2, F2, and P4 are some examples of molecular elements.

Molecular elements have more than one atom in their basic unit.

Explanation:

Atomic element exists as the smallest particle of an element that can take part in a chemical reaction. They exist with a single atom as their basic unit. The atomic number of an element is the number of protons present in the atomic nucleus of the element. Atomic elements are usually monoatomic such as H, F and P.

Molecular elements are the smallest particle that are capable of independent existence and still retains the chemical properties of those substances. They are capable of independent existence because they are diatomic. The combination of atoms of the same type produces a molecule of an element such as H₂, F₂, and P₂.

Answer:

Explanation:

CAUSATIVE AGENTS. Syphilis is a chronic infectious disease caused by the spirochaete Treponema pallidum.

Air is a mixture of gases. Air is composed of molecules such as oxygen, nitrogen and carbon dioxide. Air also contains atoms of noble gases such as neon, argon etc.

Air is composed of 21% molecular oxygen and 78% molecular nitrogen. Also, there is about 0.03% of carbon dioxide molecules in air.

Air is generally defined as a mixture of gases owing to the number of gaseous substances that compose air.

Also, there is a trace amount of noble gases which largely exists as monoatomic species in air.

Learn more: https://brainly.com/question/19368011

Answer:

9) 126.86 amu

Explanation:

Please see the attached picture for full solution.

*I can't see the fractional abundance for Q8. Thus, I am unable to help you with that.

To find the avg atomic mass, multiply the fractional abundance to each of the masses and add them all up.

Answer:

482.5 grams

Explanation:

Given that,

Volume of a cube is 25 mL

The density of gold is 19.3 g/mL

We need to find the mass of the gold cube. We know that density is equal to the mass per unit volume. So,

[tex]d=\dfrac{m}{V}\\\\m=d\times V\\\\m=19.3\ g/mL\times 25\ mL\\\\m=482.5\ g[/tex]

So, the mass of the gold cube is 482.5 grams.

Answer:

Yes, just not a fixed shape.

Explanation:

A liquid take shape of whatever is containing but that does not fix it. As long as it is being contained it retains it's shape, yet the second you release it from it's containment it becomes the shape and can take the physical properies of whatever it is contained by next.

Answer: FALSE

In order to find the mass of a substance you need to measure the container with the substance in it, and then take a second measurement with the container empty. You would then subtract the two measurements to find the total mass of the substance, you would not add as stated in the question.

Answer:

A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. ... Elements contain only one type of atom.

Explanation:

Answer:

A compound is just like what it is- a group of atoms put together. A element is made up of only 1 atom.

Explanation:

Answer:

Kinetic Energy and Potential Energy

Explanation:

When an object is in motion(ie.moving), it has kinetic energy. Energy stored in an object due to position and state, is called potential energy.

Answer: Homeostasis on the cellular level is controlled by the cell membrane.

Explanation:

Answer:

C

Explanation:

That's what the first guy said. lol

Answer:

The baby's get there traits from their parents and ancestors

Answer:

Because oil reduces the friction between the surface of your ring and your finger.

Thus it helps you to remove your ring easily

Hope it helps

Answer:

It would be 95.3

Explanation:

Answer:

Explanation:

Hydrogen fusion (nuclear fusion of four protons to form a helium-4 nucleus) is the dominant process that generates energy in the cores of main-sequence stars. It is also called "hydrogen burning", which should not be confused with the chemical combustion of hydrogen in an oxidizing atmosphere.

Responda:

+ 0,9kJ / mol

Explicação:

Dados os calores de combustão do enxofre monoclínico e enxofre rômbico como - 297,2 kJ / mol e - 296,8 kJ / mol, respectivamente para a variação na transformação de 1 mol de enxofre rômbico em enxofre monoclínico conforme mostrado pela equação;

S (mon.) + O2 (g) -> SO2 (g)

Uma vez que são todos 1 mol cada, a mudança na entalpia será expressa como ∆H = ∆H2-∆H1

Dado ∆H2 = -296,8kJ / mol

∆H1 = -297,2kJ / mol

∆H = -296,8 - (- 297,2)

∆H = -296,8 + 297,2

∆H = 297,2-296,8

∆H = + 0,9kJ / mol

Portanto, a mudança na entalpia da equação é + 0,9kJ / mol

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass of stone = 24.595 g

volume = 5.34 cm³

The density of the stone is

[tex]density = \frac{24.595}{5.34} \\ = 4.605805243...[/tex]

We have the final answer as

Hope this helps you

Answer:

Commensalism is a relationship between two organisms in which one organism benefits, and the other one is left unaffected.

Examples:

1. Barnacles on a sea turtle

2. Tree frogs and plants (they use them as protection)

1. Barnacles on a sea turtle

2. Tree frogs and plants (they use them as protection)

hope this helps

Answer:

no, but they contain a compound plant called amygdalin, so technocly yes

Explanation:

Time taken is given by :

[tex]t=-\dfrac{1}{k}\dfrac{[A_t]}{[A_o]}[/tex]    .......( 1 )

Also,

[tex]k = \dfrac{0.693}{t_{0.5}}\\\\\\k=\dfrac{0.693}{0.5}\\\\k=2\times 0.693\ year^{-1}[/tex]

Putting value of k in equation 1, we get :

[tex]t=\dfrac{1}{2\times 0.693}\times ln(\dfrac{2}{16})\\\\t=1.5\ years[/tex]

Therefore, time taken is 1.5 years.

Hence, this is the required solution.

Answer:

Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles.

Explanation:

Answer:

Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles

Answer:

1. documenting, tinkering, testing

Explanation:

Technological design is defined as the process of study, design and development of new technologies.

There are some action in the methodical tests and refinements specific to technological design include documenting, tinkering, testing.

Documenting includes collecting all the information about the design and develop the product, tinkering involves repairing or adjust the issues found in the development, and testing helps to evaluate if the product is ready to work as it is supposed to.

Hence, the correct answer is "1."