What is true of electrolytic cells but is not true of galvanic cells?
O A. They are spontaneous.
O B. They are nonspontaneous.
O C. Oxidation happens at the cathode.
O D. Reduction happens at the anode.

Answer:

be careful to not hurt yourself

Answer: make sure the liquid is pointing away from the face

Explanation:

Answer:

A. X is an element or a compound while Y is a mixture

Answer:The plant kingdom consists of organisms which posess the ability to generate their own food through a process called photosynthesis. The animalia kingdom is not capable of this process so they are obligated to obtain food from others. Known to date there are about 250,000 known types of plants.

Answer:

Members of Kingdom Animalia are heterotrophic, whereas members of Kingdom Plantae are typically autotrophic.

Explanation:

Answer:

6.56 × 10²² atoms Xe

Explanation:

Step 1: Find conversions

Molar Mass Xe - 131.29 g/mol

Avagadro's Number: 6.022 × 10²³

Step 2: Use Dimensional Analysis

[tex]14.3 \hspace{3} g \hspace{3} Xe(\frac{1 \hspace{3} mol \hspace{3} Xe}{131.29 \hspace{3} g \hspace{3} Xe} )(\frac{6.022(10)^{23} \hspace{3} atoms \hspace{3} Xe}{1 \hspace{3} mol \hspace{3} Xe} )[/tex] = 6.55911 × 10²² atoms Xe

Step 3: Simplify

We have 3 sig figs.

6.55911 × 10²² atoms Xe ≈ 6.56 × 10²² atoms Xe

Answer:

D=m/v

D=57.8/112.4

D=0.51423487544 g/mL^2

Explanation:

The density of an object with a mass of 57.8 g and volume of 112.4 mL is 514.23 mg/m L.

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.

Density is commonly expressed in units of grams per cubic centimeter.

Density can also be expressed as kilograms per cubic metre .

To calculate the density of an object ,

Given,

Mass=57.8 g(57.8×1000=57800mG) convert grams into milligrams

Volume=112.4mL

We know ,

Density =mass/volume

=514.23mG/mL

The density of  an object with a mass of 57.8g and volume of 112.4 mL is 514.23 mg/m L.

Learn more about density ,here:

https://brainly.com/question/15164682

#SPJ2

Answer:

a

Explanation:

magma is lava and lava is magma

A Lava and magma are both types of molten rock is true about lava and magma. Therefore, option A is correct.

Extrusive igneous rocks are formed when molten rock cools on Earth's surface. Rhyolite, pumice, and basalt are a few examples. Intrusive igneous rocks are formed when molten rock cools within Earth. Granite and gabbro are two examples.

Magma is an extremely hot liquid and semi-liquid rock found beneath the Earth's surface. The inner core, outer core, mantle, and crust make up Earth's layered structure. Magma makes up a large portion of the planet's mantle. This magma has the potential to push through holes or cracks in the crust, resulting in a volcanic eruption.

Scientists refer to molten rock underground as magma, and molten rock that breaks through the Earth's surface as lava.

Thus, option A is correct.

To learn more about the molten rock, follow the link;

https://brainly.com/question/27335589

#SPJ2

Answer:

The microbiome is defined as the collective genomes of the microbes (composed of bacteria, bacteriophage, fungi, protozoa and viruses) that live inside and on the human body. We have about 10 times as many microbial cells as human cells.

Explanation:

Hope this helps

Answer:

Option B is correct = They are inversely proportional to each other.

Explanation:

Frequency and wavelength of lights are inversely proportional to each other.

The wave of light having highest frequency have shortest wavelength and the light with the shortest frequency having highest wavelength.

Formula:

Speed of light = wavelength × frequency

c = λ × f

λ = c/f

This formula shows that both are inversely related to each other.

The speed of light is 3×10⁸ m/s

Frequency is taken in Hz.

It is the number of oscillations, wave of light make in one second.

Wavelength is designated as "λ" and it is the measured in meter. It is the distance between the two crust of two trough.

Option A is incorrect:

Because wavelength is determine by dividing speed of light by frequency.

Option C is incorrect:

Because wavelength and frequency are not directly proportional to each other.

Option D is incorrect:

Because frequency is equal to the speed of light divided  by wavelength.

Answer: it’s B or the second option

Explanation:

Answer:

Failure is a lesson

Explanation:

Without failure, we'd be less capable of compassion, empathy, kindness, and great achievement. It's through failure that we learn the greatest lessons that life could teach us.

Answer:

green

Explanation:

Answer:

8 mL

Explanation:

You read volume on a graduated cylinder by counting the number under the line on top of the liquid (minuscus).  

Before the rock was added, the volume is 10 mL.  After the rock was added, the volume is 18 mL.  Subtract the two volumes to find the volume of the rock.

18 mL  -  10 mL  =  8 mL

The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, the pH of 1.0 x 10⁻³ M of solution is 7.002. pH is a unitless quantity. Therefore, the ratio between  [H+] and [OH⁻] is 100:1.

pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.

On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.

pH =-log [H+]

Substituting the given values, in above equation, we get

6 =-log [H+]

[H+]=  0.000001

[H⁺]x[OH⁻] = 10⁻¹⁴

0.000001x[OH⁻] = 10⁻¹⁴

[OH⁻] =0.00000001

ratio= [H+]/[OH⁻]

     = 0.000001/0.00000001

     =100:1

Therefore, the ratio between  [H+] and [OH⁻] is 100:1.

To learn more about pH, here:

https://brainly.com/question/27945512

#SPJ2

Answer:

Epicenter

Explanation:

Answer: Where does an earthquake’s motion occur first?

The earthquake's motion occurs first at  epicenter.

Explanation:

Answer:

Option c is correct = 4

Explanation:

Significant figures:

All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

Zero between the non zero digits are consider significant like 104 consist of three significant figures.

The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

In given measurement 0.04350 there are four significant number

4,3,5,0

These all are significant.

Answer: By Stoichiometry, 3 moles of chlorine gas reacts with 6 moles of sodium hydroxide solution to form 5 moles of sodium chloride, 1 mole of sodium chlorate (V) and 3 moles of water. Hence, the reaction between chlorine gas and hot, concentrated NaOH solution yields Sodium chloride and sodium chlorate(V).

Explanation: Hope it helps :)

Answer:

nobel gases

Explanation:

nobel gases elements in the periodic table are least likely to combine with other elements

Answer:

Explanation:

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

From the question

density = 5.8 g/ml

volume = final volume of water - initial volume of water

volume = 12.4 - 10.5 = 1.9 mL

The mass of the rock is

mass = 5.8 × 1.9

We have the final answer as

Hope this helps you

Answer:

110.2 g

Explanation:

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

mass = Density × volume

Answer:

D

Explanation:

i took a test with this question

Answer:B

Explanation: It is a compound

Iron (II) sulfide can not be separated by physical methods because it is a compound.

A compound is a combination of elements that are chemically combined. The components of a compound can not be separated by physical methods.

A compound is formed during a chemical change so it is not easy to reverse the process and obtain the constituent elements again.

Therefore, the components of Iron (II) sulfide can not easily be obtained again because a compound has been formed.

Learn more: https://brainly.com/question/22889208

Answer:

small- even though they are huge suns themselves.

Explanation:

Answer:

if we were standing on the sidewalk Thane our perspective of the world would look like ( car moving right) (plane moving right as well) hope this helps comment for any further help

Answer:

The genetic material of plant and animal cells is located in the nucleus (option B).

Explanation:

In living beings the nucleus of each cell contains the genetic information in a molecule called DNA. The DNA is formed by chains of nucleotides, whose order and sequence determine this information.

A DNA molecule forms a chromosome, and this contains genes, corresponding to segments or fractions of the DNA molecule that forms it. This information, contained in the nucleus, is necessary for the construction and functioning of each living being.

Lysosomes , cell wall  and chloroplasts are other cellular structures that do not store genetic material.

Answer:

in the nucleus so b is the answer.

Explanation:

Answer:

it's C

Explanation:

got it right on EDG 2021

The scientific consensus is a general agreement among scientists about a scientific idea. The correct option is C.

A scientific idea is the explanation or facts of science. It reveals the truth about the world. How the world works and the secrets of nature. It tells and gathers true information about the world.

The different aspects of life and the world are understood and studied by scientists. Different scientists work for different forms of life. The scientist's ideas change over the different evidence.

The generalized ideas of various scientists give and agree upon the different theories of the levels of science. The publication process and specialized field.

Thus, the correct option is C. a general agreement among scientists about a scientific idea.

To learn more about the scientific ideas, refer to the link:

https://brainly.com/question/18779762

#SPJ2

Answer:

Metalloid

Explanation:

A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is neither a standard definition of a metalloid nor complete agreement on the elements appropriately classified as such

Answer:

Mass of KBr present = 2.23 g

Explanation:

Number of moles of KBr present in 75.0 ml of 0.250 M solution of KBr is first determined

From the formula: molarity = number of moles/ volume (L);

Number of moles = molarity * volume (L)

Volume of solution in Litres = 75/1000 = 0.075

Number of mole = 0.250 * 0075 = 0.01875 moles

Mass = number of moles * molar mass

Molar mass of KBr = 119 g/mol

Mass = 0.01875 moles * 119 g/mol = 2.23 g

Answer:

Chemically

Explanation:

Because chemical bonds form between the atoms.