Answer question number 6

Answer:

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Energy of electrons depends on light's frequency, not intensity. A change in which property of light will have no effect on whether or not the photoelectric effect occurs?

Explanation:

Answer:

The valence shell (the 3s and 3p sublevels) contains six electrons, but it needs eight to become stable. Think of the octet rule. Therefore a sulfur atom will gain two electrons to form the sulfide anion with a charge of 2− , with the symbol S2− .

Answer:

Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid. Heat the water. When it starts boiling, add copper sulphate powder slowly while stirring continuously. ... Crystals of copper sulphate will be seen at the bottom of the beaker.

Hope it helps

The characterization of the following statements with respect to intensive or extensive is as follows:

Extensive may be defined as terminology that illustrates any event or action which is extremely large and significantly found at the outer level of any referring details. For example, the shipping cost of a book (depends on weight) is mentioned outside the cover of the book.

Intensive may also be characterized as a scientific terminology that significantly deals with any object or details which is present inside the content. For example, the number of pages in a book is mentioned inside the book.

Therefore, the characterization of the following statements with respect to intensive or extensive is appropriately described above.

To learn more about Extensive and intensive, refer to the link:

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Answer:

Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste. When organic matter, such as food scraps and animal waste, break down in an anaerobic environment (an environment absent of oxygen) they release a blend of gases, primarily methane and carbon dioxide.

Explanation:

Biomass is renewable organic material that comes from plants and animals. ... Biomass contains stored chemical energy from the sun. Plants produce biomass through photosynthesis. Biomass can be burned directly for heat or converted to renewable liquid and gaseous fuels through various processes.biodigester is like a mechanical stomach. It is fed with organic material, which is broken down (decomposed) by micro-organisms (bacteria) is an oxygen-free (anaerobic) environment to produce a renewable energy called biogas (methane and carbon dioxide) and other material that is mainly used as fertilizer.

Explanation:

Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste.

Biomass is plant or animal material used for energy production, or in various industrial processes as raw substance for a range of products.

A Biodigester simply means a tank which digests organic material biologically. In this sense, the FilterPod is a biodigester. However, many people think of a biodigester as a tank which digests, anaerobically, without air, organic material and produces methane gas for cooking, lighting and heating ect.

Answer: 49

Explanation: Mass number is protons + neutrons. So that would be 22 + 27 which gives you 49

Answer:

21

Explanation:9+10

Answer:

b

Explanation:

Answer:

1.28g

Explanation:

honestly just put it a half life caculator i couldnt tell you how to do it if my life depended on it ‍♂️

Answer:

b and then c

thanks for the brainly points

Answer:

Explanation:

Convert mass in gms .. 987 gms

Density = mass/ volume

= 987/4.52 x102

= 2.18 g/mL

Answer:

The physical properties of minerals are related to their chemical composition and bonding. Some characteristics, such as a mineral's hardness, are more useful for mineral identification.

Explanation:

Answer:

Explanation:

mineral properties are what it is made if the characteristics are what it looks like. Like is it shiny, hard, smooth. those are characteristics.

Answer:

Frequency

Explanation:

I do not see the options but I know the answer:

The frequency of a sound wave is what your ear understands as pitch. A higher frequency sound has a higher pitch, and a lower frequency sound has a lower pitch.

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Answer:

frequency

Explanation:

vaild

Answer:

1. Solid Definition: firm and stable in shape; not liquid or fluid.

Example: A hard kitchen countertop.

2. Crystalline Solid Definition: Crystalline solids consist of atoms, ions and molecules arranged in definite and repeating three-dimensional patterns in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

Example: Salt, diamonds

3. Amorphous Solid Definition: an amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.

Example: rubber, plastic, and gels

4. Liquid Definition: A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a constant volume independent of pressure. As such, it is one of the four fundamental states of matter, and is the only state with a definite volume but no fixed shape.

Example: Water, juice, rain

5. Surface Tension Definition: the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.

Example: Walking on water: Small insects such as the water strider can walk on water because their weight is not enough to penetrate the surface.

Explanation:

you're welcome, brainliest please (:

Answer:

cytoplasm

Explanation:

cytoplasm carries the nutrients of the cell

Answer:

The answer is 3and 5/9 multiplied by 20 which is about one hour and  14 ,inutes

Explanation:

Answer:

Friction between the hand and the wood decreased.

Explanation:

The texture of the wood went from rough → smooth! This means friction between the hand and the wood was notably decreased.

According to this prompt, the carpenter used sandpaper against the wood. Sandpaper just so happens to be a very abrasive substance. The sandpaper polished and leveled out the wood which wore all the jutting bits away.- overall, making it much smoother and more pleasant to touch!

Hope I was of assistance! Have a nice day and Spread the Love! <3

Answer:

Yes the air particles have mass

Explanation:

Air is mater: it has weight and occupies space. For it to have weight, it has to have a mass. The mass would however be determined by how much volume of air is trapped in the container, but nevertheless, the mass of the air can be obtained.

We also notice that if the container is "popped", the mass of air escapes through one way by the weight exerted on it.

I hope this was helpful.

Answer:

Yes the air particles have mass

Explanation:

You can tell that if the container is pooped open the mass of air escapes

Answer:

3.7

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. 0.007 in this number only one significant figure present which is 7.

Zero between non zero digits are consider significant such as  1004 consist of four significant figures.

The zeros at the right side such as 4500 are also significant. There are four significant figures are present.

When we add or subtract the values the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.

Now we will calculate the difference between 7.69 and 4.0.

7.69 - 4.0 = 3.69

In given values 4.0 have less number of decimal places thus result must have only one decimal places. So we would round the result.

3.7

Answer:

it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)

Explanation:

Answer:

In ice cube heat is taken in absorbed it's an endothermic reaction

In fire heat is given out it is an exothermic reaction

Explanation:

Wanna give you one advice

Exit of heat means exothermic and you can memorize it by

The first word of both word exit ;exo

Hope it helps you

Answer:

Explanation:

The kinetic energy of a body can be found by using the formula

[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]

where

m is the mass

v is the velocity

From the question

m = 100 kg

v = 3 m/s

We have

[tex]KE = \frac{1}{2} \times 100 \times {3}^{2} \\ = 50 \times 9[/tex]

We have the final answer as

Hope this helps you

Answer: argon

What must happen to a sulfur atom in order for it to have an electron arrangement similar to that of a noble gas? Answer: The noble gas closest to sulfur is argon. A sulfur atom gains two electrons to have an electron arrangement similar to that of argon.

Explanation:

Answer:

C

Explanation:

If you move the decimal to the left it transforms the expression into scientific notation.

Answer:

there would be no effect

Explanation:

Answer:

It might be e=FCA

Explanation:

Explanation:

Biological in the ocean is affected by the water cycle via the Mixed Layer Depth and Run off from land. Salinity and temperature determine the density of ocean water, and density influences the circulation. E-P determines surface salinity of the ocean, which helps determine the stability of the water column.

Answer:

Explanation:

The volume of the marble can be found by using the formula

volume = final volume of water - initial volume of water

So we have

volume of marble = 61 - 45

We have the final answer as

Hope this helps you

Answer:

16mL

Explanation

Answer:

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

Answer:

The atomic mass is the mass of an atom.

Explanation: