) The valency of sodium atom is 1, what does it mean?​

Answer:

Explanation: Chemical changes  cause a substance to change into an entirely substance with a new chemical formula. And chemical changes are also known as chemical reaction.

Answer: answer is A

Explanation:

Answer:

if an object weighs more than an equal volume of water, it is more dense and will sink, and if it weighs less than an equal volume of water, it is less dense and will float. Remember that the density of water is about 1 g/cm3.

Answer:

[tex]V_2=35.68\ L[/tex]

Explanation:

Initial volume, V₁ = 300 L

Temperature, T₁ = 227°C

New temperature, T₂ =  27°C

We need to find the volume of gas occupied when the temperature is 27°C.

It is based on Charle's law. A/c to Charle's law,

[tex]V\propto T[/tex] (at constant pressure)

[tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}\\\\V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{300\times 27}{227}\\\\V_2=35.68\ L[/tex]

Hence, the new volume is 35.68 L.

Answer:

The climate of any particular place is influenced by a host of interacting factors. These include latitude, elevation, nearby water, ocean currents, topography, vegetation, and prevailing winds.

Explanation:

those are what does not affect climate

Answer:

Meter

Explanation:

Answer:

Sodium (Na)

Explanation:

Answer:

Explanation:

moles

bonding

balancing equations

and set ups

The Rutherford experiment rose above Thompson's Model 1911 with his gold-foil experiment. He designed an experiment to use the alpha particles created by a radioactive element as probes. Hope this helps you.

Answer:

Explanation:

In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays.

I tried, I hope it helps :)

Answer: To examine whether one variable causes a change in another

Explanation:

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual density = 0.7 g/cm³

error = 0.7 - 0.63 = 0.07

So we have

[tex]p(\%) = \frac{0.07}{0.7} \times 100 \\ = 10[/tex]

We have the final answer as

Hope this helps you

Answer

There is much more friction on the rough surface that there is on the smooth surface.

Answer:

can someone please do this and put the answers below !!!!

Explanation:

Answer:

omggggggggg that is sooo confusing what grade are you in?

Answer:

Depends on if the atoms have the same amount of atomic mass and if they have the same amount of ions, or none at all.

Explanation:

They can be the same atom, but if they don't have the same amount of protons, electrons, and neutrons, they aren't identical.

Answer:

12 sodium 4 phosphorus 16 oxygen.  makes the table below to determine the number of atoms of each element in the chemical formula 4Ca(ClO3)2.

Answer:

Answer option D- all of the above

Answer:

Nuclear fission/ split apart

Explanation:The process of splitting a nucleus is called nuclear fission and is used in nuclear power reactors. Fission is another word for splitting.

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Answer:

The correct answer is B. Nuclei split apart

Explanation:

EDGE2022

Answer:

a

Explanation:

Answer:

Sedimentary, igneous and metamorphic

Metomorphic, heat and pressure

Sedimentary erosion and weather

Igneous magma and lave

So three!

Answer:

kilometers.........

Answer:

study island

proof

Explanation:

Fossilized marine creatures found at the top of the Himalayan Mountains provide evidence for a scientific theory of plate tectonics. Therefore, option (D) is correct.

Plate tectonics can be explained as the Earth's lithosphere being made of a large number of tectonic plates that have been slowly moving since about 3.4 billion years ago.

The lithosphere is broken into 7 or 8 major plates and many minor plates or "platelets". These plates meet, and their relative motion evaluates the kind of plate boundary: convergent, transform, or divergent.

Mountain-building, Earthquakes, volcanic activity, and oceanic trench formation take place along these plate boundaries. The relative annual movement of the plates ranges from 0 to 10 cm.

Tectonic plates are comprised of the oceanic and the thicker continental lithosphere. The process of subduction which is actually one plate moving under another carries the edge of the lower plate down into the mantle along convergent boundaries.

Pebbles, Shells, and marine fossils found in the limestone beds of the tallest Himalayas Mountains give evidence of the theory of plate tectonics.

Learn more about plate tectonics, here:

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Answer:

2Br(aq)+2HNO2(aq)+2H(aq)------->Br2(l)+2NO(aq)+2H2O(l)

Explanation:

The given redox reaction can be balanced in acidic medium as follows:

[tex]\rm 2 Br^{-} + HNO_{2} + H^{+} \rightarrow Br_{2} +NO + H_{2}O[/tex]

A reaction involving both oxidation and reduction is called redox reaction. One species is getting oxidized here whereas another species reduces. The substance which is oxidized  is called oxidant and the reduced species is called reductant.

In the given reaction of bromine gas with nitrous acid, bromine oxidizes from -1 to zero whereas nitrogen reduces from +3 to +2. The reaction can be occurred in acidic medium.

The redox reaction written in acidic medium involves H+ and water properly added to either sides. The balanced redox reaction of the given one in the acidic medium is thus as written above.

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Answer:

Explanation:

The formula is density = mass÷volume

Values given are:

mass = 5.910g  and

diameter = 10.0 mm = 1cm

so, we need to find the volume first.

Volume of a sphere is (4/3)πr³

thus, V = 4.189 cm³

Density = mass ÷ volume

density = 5.910 ÷ 4.189

= 1.411 g/cm³

This problem is providing information about the states of matter and a given diagram showing a molecular arrangement it has. Thus, we can start off by analyzing the attached file, which shows molecular arrangements and movements each state exhibits.

Solids are quite organized so that they are able to form molecular networks in which molecules vibrate but do not displace anywhere. Liquid molecules are close enough to have small movements and vibrations but are not able to form any organized network.

Gases, however, exhibit no molecular organization but large movements inside the container whose walls the gas constantly crash against. Plasma do not have any order neither yet it contains ions.

In such a way, since the given diagram do not have any apparent order or ion, we infer this is about a gas that moves into the container and crash against its walls.

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Answer:

it is second one

Explanation:

thanks

Answer:

the substance is an acid