electric service has accumulated on an object is referred to as​

Answer:

A

Explanation:

mole=mass of the element ÷ atomic mass of the element.

mole=6÷atomic mass of flourine.

The step at A correctly converts 6 grams of fluorine to an equivalent number of moles of fluorine. That is "Divide 6 by the atomic mass of fluorine".

Given that,

The mass of fluorine = 6 grams

The atomic mass of one mole of fluorine = 18.99

So, the number of moles of 6 grams of fluorine= \(\frac{6}{18.99}\)

Therefore, the step is given in option A: "Divide 6 by the atomic mass of fluorine" is the correct step that converts the 6 grams of fluorine to an equivalent number of moles of fluorine.

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Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:

Helium

Explanation:

Answer:

A solid is the hardest state of matter and require a liquid to freeze and is firm and stable in shape. A liquid is a a substance that flows freely but is of constant volume and can form when gas is cooled down. A gas is a state of matter that has no fixed shape and no fixed volume.

Explanation:

Answer:

The first person is right.

1. Freedom of motion of their particles

2. How strongly particles attract each other

solid-----Constant shape and constant volume

liquid-----variable shape, constant volume

gas--------variable shape, variable volume

Answer:

A

Explanation:

Food is digested in the stomach for several hours. During this time, a stomach enzyme called pepsin breaks down most of the protein in the food. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.

Answer:

A

Explanation:

Answer: PUMPKIN

Explanation:

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

A cytoplasm is a fluid inside a eukaryotic cell that contains fluids and other molecules. Most of a cell's water is in the cytoplasm. It has a colorless look.

Answer:

1. hot    2. night   3. mammals (not completely sure about this one)

Explanation:

Answer:

5.4 × 10^6

Explanation:

Answer: D.  430 K

Explanation:

Using Gibbs Helmholtz equation:

\(\Delta G=\Delta H-T\Delta S\)

\(\Delta G\) = Gibbs free energy  

\(\Delta H\) = enthalpy change  = 62.4 kJ/mol

\(\Delta S = entropy change  = 0.145 kJ/mol K

T = temperature in Kelvin

\(\Delta G\) = +ve, reaction is non spontaneous

\(\Delta G\)= -ve, reaction is spontaneous

\(\Delta G\)= 0, reaction is in equilibrium

At equilibrium : \(T\Delta S=\Delta H\)

\(T=\frac{\Delta H}{\Delta S}\)

\(T=\frac{62.4}{0.145}\)

\(T=430K\)

Thus at 430 K , the reaction is at equilibrium.

Use the reaction I2(s) ⇌ l2(g), ΔH = 62.4 kJ/mol, ΔS+ 0.145 kJ/(mol⋅K), for this question. At what temperature is the reaction at equilibrium?

430 K

Answer:

steam is and example of vapor and gas.

Answer:

evaporation

Explanation:

because the water boils and steam leave so it's evaporation

c. The atom becomes positively charged

if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom

Answer:magnets work underwater the same as they do in air or in a vacuum.

Explanation : Water is almost completely non-magnetic, so magnets work underwater the same as they do in air or in a vacuum.

Fire stick Managing the environment through farming Aboriginal people  routinely burned grass to minimise fuel and promote new growth in order to attract grazing animals for hunting.

Among the various ways that agriculture has an impact on society are the provision of food, habitat, and employment opportunities; the provision of raw materials for food and other goods; and the development of robust economies through commerce.

A large number of species use pasture and crops as both a habitat and a source of food, making up around 50% of the planet's livable land. Sustainable management of agricultural operations has the potential to safeguard watersheds, restore significant habitats, and improve the quality of the soil and water supply.

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Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer:

large atoms

Explanation:

its kinda obvious

Answer:

large atoms (B)

Explanation:

J fnjoq j wjqs fhdfwx

Its a sercret code figure it out and the answer is yours

1. print fossil

2. carbonized fossil

3. petrified fossil

4. cleavage

5. landform

6. igneous

7. metamorphic

8. print fossil

9. geology

10. sedimentary

\(\)

The print fossil, original-remains fossil, petrified fossil, carbonized fossil, landform, igneous, metamorphic, sedimentary, cleavage, and geology are the respective matches as given in the question.

Print fossil is imprint of plant or animal and basically known as fossil impression. Original-remains fossil comprises of the original tissues and parts of  organism and undecayed plant or animal part. Petrified fossil is replaced by a mineral. Carbonized fossil is only carbon remains. Landform is a mountain. Igneous is from magma.

Metamorphic is from physical and chemical changes. Sedimentary rocks are sandstone. Cleavage helps to identify rocks. Geology is the study of science of earth.

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Answer:

After one-half life: 16 mg

After 2-half lives: 8 mg

After 3-half lives: 4 mg

After 4-half lives: 2 mg

After 5-half lives: 1 mg

(5 half-lives) x (8 days/half-life) = 40 days  

or doing it the mathematical way:  Let z be the number of days to be found:

1 mg = 32 mg x (1/2)^(z / 8 days)  

1/32 = (1/2)^(z / 8 days)  

log (1/32) = (z / 8 days) x log (1/2)  

z / 8 days = log (1/32) / log (1/2)

z = 8 days x log (1/32) / log (1/2) = 40 days

Explanation:

Iodine-131 has a half-life of 8 days, then it would it take for the number of unstable nuclei in the sample to be reduced from 1,000 to 125 is 512 days.

Total time of the reduction of any substance from an initial concentration to a particular concentration will be calculated as:

T = (t)ⁿ, where

n = number of half lives

t = half life time = 8 days

1st half life: 1000 → 500

2nd half life: 500 → 250

3rd half life: 250 → 125

So number of half life times is 3. On putting values we get,

T = (8)³

T = 512 days

Hence total duration of time is 512 days.

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Answer:

Keep in mind this changes from microscope to microscope.

Explanation:

On most classroom microscopes, there will be two knobs on either side of the scope.  These will increase or decrease the height of the "stage", which is how you "focus" the microscope.  The larger knob will move the stage the most, and thus, is called the coarse focus.  The smaller knob is called the fine focus, and, you guessed it, will move the stage the least.  There are usually three "objective lenses".  Each will have a different magnification and will be listed on the lens itself.  It rotates around the "revolving nosepiece".  MAKE SURE THAT THE SLIDE IS LOWERED BEFORE ROTATING THE LENSES!!!!  If you don't you WILL break the slide and you WILL get death looks from the teacher.

On the stage, there are two clips.  They move NOT up and down, but they spin.  what you want to do is to move the slide into the clips.  They will not break if you do not bend them more than what the slide will bend them to.

The technique for focusing the microscope is really easy once you do it a few times.  After making sure that the microscope is plugged in and the light on and the slide and lens in the lowest position/magnification (!) move the coarse focus knob so that the object in the slide is just visible.  Once you do that, from there use the fine focus knob to make the object most visible.

These instructions vary slightly from model to model of microscope, but the picture below is very accurate and everything I warned you about is for all microscopes.

Answer: It is the third one.

Explanation:

An index fossil is something that a human can estimate the age of the fossil by looking at it.

Answer:

D, exothermic reaction

Answer: it indicates exothermic reaction

Explanation:

There is quite a big difference between a barred spiral galaxy and an elliptical galaxy.

The image attached below shows a barred spiral galaxy, NGC 2217. In barred spiral galaxy there is large bar like structure across the core of the galaxy , and on the terminal end there are the spiral arms of the galaxy. It is believed that the bar plays a role of material transportation to the core. The bar funnels in the surrounding material toward the SMBH at the core. The arms of the barred spiral galaxy often host high star formation rate as seen in the image below. The bar is often consist of dust and old stars.Where as in elliptical galaxy, the galaxies are somewhat diffused and also they don’t host much of the new stars. Elliptical galaxies are often unbounded. Elliptical galaxies are believed to be formed from several mergers and that’t the reason for their inability to form new stars.

Hope it will help

I know this is very big answer