Help!! is for tomorrow​

Answer:

the answer is the option 4

Explanation:

i believe its number 4 because when you live near a beach the temperature is cooler

Answer:

A IS DISPLACEMENT

B IS VOLUME

C IS DENSITY

D IS MASS

1.003

3.441

2 O

first

third

because of its milk-like appearance. ... Since the dissociation of this small amount of dissolved magnesium hydroxide is complete, magnesium hydroxide is considered a strong electrolyte. Its low solubility makes it a weak base.

Answer: 0.337 mol Ca

Explanation: 13.5 g Ca ÷ (40.1 g/mol Ca) =

Answer:

13.5/40+0.3375

Explanation:

Answer:

(a) (i) All the elements of a group have similar chemical properties because they have the same no. of valence electrons in their outermost shell. (ii) All the elements of a period have different chemical properties because they have different no. of valence electrons in their atoms.

Answer:

Hey mate...

Explanation:

This is ur answer....

Effervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from that release.

Hope it helps!

Brainliest pls!

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Explanation:

Your answer is effervensecence

Answer:

3 2 4 5 1

Explanation:

The position of an element on the periodic table depends on its chemical properties.

The periodic table is an arrangement of elements in groups an periods. The elements in the same group are chemically similar while the elements that are in the same period only have the same number of shells.

The question is  incomplete as the required charts are not shown. However, the position of an element on the periodic table depends on its chemical properties.

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Answer:

c = λ f

c is the speed of light, λ the wavelength in meters, and f equals the frequency in cycles per second.

Explanation:

Explanation:

xác định nội năng chuẩn ΔU của phản ứng tổng hợp amoniac

ở 400 0 C, biết :

N 2(k) + 3H 2(k) = 2NH 3(k) ΔH 0 T = - 109,0 kJ

Carbonated beverages contain dissolved carbon dioxide gas. Low temperatures are best to minimize the solubility. option C is correct.

Drinks that have carbon dioxide dissolved in the water are referred as carbonated beverages. The presence of this gas causes the liquid to froth.

Carbonation takes place by applying pressure. Spring water, beer and soda, and pop are a few examples of carbonated beverages. When carbon dioxide  is absorbed in a liquid, for example spring water, it absorbs Carbon dioxide from the subsurface. It can also happen naturally. Beer is  example of a naturally carbonated beverage as the brewing process produces carbon dioxide soda .

Thus option C is correct.

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Recall f=ma

f = 2 x 2 = 4N

The amount of force is 4N

Explanation:

Assuming that pressure is equal to

1 atm

, boiling water at its boiling point implies providing it with enough heat to turn it from liquid at

100

∘

C

to vapor at

100

∘

C

.

The amount of heat needed to allow one mole of water to undergo this phase change is called the enthalpy chnge of vaporization,

Δ

H

vap .For water at

100

∘

C

, the enthalpy change of vaporization is equal to

Δ

H

vap

40.66 kJ/mol

It's called "competition"

Answer:

elements from group four to eight

Answer:

Explanation:

The only way to know for sure if a chemical reaction has occurred is to identity that a new compound has been formed. There are signs

we can look for that help to determine if a chemical reaction has occurred. One sign of a chemical reaction is the formation of a gas

observed as bubbling, flezing, or foaming.

Some chemical reactions, like the burning of wood, result in the production of heat or light energy.

A change in temperature either an increase or decrease, can indicate that a chemical reaction has occurred.

The formation of a precipitate is another sign of a chemical reaction. A

precipitate is a solid substance that separates from a solution.

A change in color such as we see in the rusting of a bike chain, is the final sign that a chemical reaction has occurred. If one or more of these signs is

presnt, a chemical reaction has occurred

Answer:

Explanation:

There are 6 32S atoms and 2 36S atoms

Their respective contributions to the average aomic mass is (6*32)=192, and (2*36)=72.  Added together, this makes 264 total.  Divide by the total number of atoms, 8.  (264/8) = 33.00

The weighted atomic mass of these S atoms is 33.00 amu (atomic mass units)

Answer:

2 mins

Explanation:

because it will let it soak into your ear and get everything out

Answer: 28. A

26. E

23. C

Explanation:

Only know a couple sorry

Answer:

-indicates that the measurement is also precise.

Explanation:

Pretty sure it's option 2.

Answer:1) 9,5 грамм

2) 1,8 л вроде

Explanation:

1) H2+F2=2HF

n(H2)=1 моль. n(F2)=1моль

M(H2)=1г/моль. М(F2)= 19г/моль

0,5:1=х:19.

2) H2S+2NaOH=2H2O+Na2S

M(H2S)= 34г/моль. М(NaOH) =40г/моль

5,6:80=х:34. m(H2S)= 2,38г.

n(H2S)= 2,38:34≈0,08

V=Vm•n= 22,4 • 0,08=1,8

Answer:

Here's a pretty short answer :D

Explanation:

Solids have definite volume and shape, liquids have definite volume but take the shape of their containers unlike solids. Gases don't have definite shape or volume, and plasma is somewhat gas because its particles are far apart from each other - but - gases are electrically neutral while plasma has a charge.

.

.

.

Hope this helped! :3

Answer:

They need to put a question that has an error in it

Answer:

The capillary tube was too close to the bottom of the beaker.

The ruler may have moved.

Water got into the capillary tube.

The temperature was not allowed to equilibrate in the 2-4 minutes

Answer:

1.An initial observation is the measurement that you take before you start any process that might cause a change. When you compare your subsequent observations with the initial one, you will see whether any change has taken place, and you will be able to measure the change.

Explanation:

D ko po alam yung iba

Answer: Yes, if there are more shells the nuclear charge decreases.

Answer:

A. 4s subshell.

B. An element with the valence electron configuration 2s² 2p⁵ would form a monatomic ion with a charge of -1.

In order to form this ion, the element will gain 1 electron into the 2p subshell

A) The element with 4s² configuration form a monatomic ion with a charge of  +2 and the element will lose electrons from the 4s subshell.

B) The element with 2s²2p⁴ configuration form a monatomic ion with a charge of  -2 and the element will gain electrons into the 2p subshell.

Valence electrons are the electrons occupying the outermost shell of an atom while the electrons in the inner shell are called core electrons. Lewis structures are helpful to determine the number of valence electrons and knowing the types of bonds.

Valence electrons are filled in different shells and these electrons are caused interaction between atoms and lead to the formation of chemical bonds.

Only electrons present in the outermost shell can contribute to the formation of a chemical bond or a molecule and decide the reactivity of the element.

The element with a 4s² configuration forms a monatomic ion as it loses both electrons present in the 4s subshell.  This will lead to a charge of  +2 on the element and the element from a monoatomic ion with +2 charge.

The element with 2s²2p⁴ configuration will accept two electrons into the 2p subshell. So that it can get the nearest noble gas configuration and it will form a monoatomic ion with -2 charge.

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Answer:

tae nimo par and thankyou

Explanation:

i hope its help