Explanation:
Force=mass×acceleration
F=m×a
F=30×0.45= 13.5N
hope this helps you.
why a mixture of magnesium hydroxide and water is known as milk of magnesia
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.
CLOZE 2
The only way to know for sure if a chemical reaction has occurred is to identity that a new
has been formed. There are
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
observed as bubbling, flezing, or foaming.
Some chemical reactions, like the burning of wood, result in the production of
A change in
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
is a solid substance that
separates from a solution. A change in
such as we see
ng of a bike chain, is the final sign that a chemical reaction has occurred. If one or
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
How many moles are in 13.5g of calcium?
Answer: 0.337 mol Ca
Explanation: 13.5 g Ca ÷ (40.1 g/mol Ca) =
Answer:
13.5/40+0.3375
Explanation:
Use the drop-down menus to order the steps for writing chemical names. Write the name of the element that is farthest to the left on the periodic table with the correct prefix. Use the subscripts to determine the number of each atom in the compound Write the name of the second element with the correct prefix and ending with the suffix-ide. Put the names together, with the name of the element farthest to the left written first. V Use the chemical symbols and the periodic table to identify the names of the elements in the compound
Answer:
3 2 4 5 1
Explanation:
The position of an element on the periodic table depends on its chemical properties.
What is the periodic table?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.
Learn more about periodic table: https://brainly.com/question/15289741?
You Do 3: How many weeks are there in 3.87 x 10 minutes?
Which phrase describes a nuclear chain reaction?(1 point)
a reaction in which particles spontaneously emit radiation
a series of reactions in which particles from one reaction trigger the next reaction
a type of reaction which only takes place in the sun and other stars
a reaction in which small nuclei combine into a larger nucleus
Answer:
a series of reactions in which particles from one reaction trigger the next reaction
Explanation:
cause thats a chain
The struggle between organism to suvuve in a habitat with limited resources is called
It's called "competition"
how long do you leave hydrogen peroxide in your ear
Answer:
2 mins
Explanation:
because it will let it soak into your ear and get everything out
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
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
how far is the subduction zone from manila
Answer:
At 22°N, a low-velocity zone is exposed at depths of 20–200 km beneath the Manila Accretionary Prism, which could be the boundary between subduction in the south and collision in the north
If there are more shells does the nuclear charge decrease
Answer: Yes, if there are more shells the nuclear charge decreases.
The equation that shows the relationship between speed, wavelength, and frequency of electromagnetic waves is
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:
Density measures
A
how much liquid is in an object.
B
the amount of space an object takes up.
C
how tightly packed an object’s particles are.
D
the amount of matter contained in an object.
Answer:
A IS DISPLACEMENT
B IS VOLUME
C IS DENSITY
D IS MASS
Aristonun teorisini çürüten bilim adamı
How much heat is required to raise the temperature of 86.5g of water from its melting point to its boiling point
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
PLEASE HELP, I REALLY NEED HELP WITH THIS!!!
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)
Найти массу фтора, который понадобится для взаимодействия с 0.5 г водорода. Образуется фтороводород. 2. Найти объем сероводорода, который прореагирует с 5, 6 г гидроксида натрия.
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
Help me pls due tomorrow
1.003
3.441
2 O
first
third
homogeneous or heterogeneous ang ibig sabihin ng dalwang ito
Answer:
tae nimo par and thankyou
Explanation:
i hope its help
Explain what it means for an atorn to be neutral.
An object with amass of 2.0 kg accelerates 2.0m/s 2 when an unknown force is applied to it. What is the amount of force?
Recall f=ma
f = 2 x 2 = 4N
The amount of force is 4N
A. An element with the valence electron configuration 4s2 would form a monatomic ion with a charge of ____. In order to form this ion, the element will (lose/gain) (#) electron(s) from/into the ____ subshell(s).
B. An element with the valence electron configuration 2s^2 2p^4 would form a monatomic ion with a charge of ____. In order to form this ion, the element will (lose/gain) # electron(s) from/into the ____ subshell(s).
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.
What is a valence electron?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.
Learn more about valence electrons, here:
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PLEASE HELP! WILL GIVE BRAINLIEST!!!! match the terms on the left with the terms on the right.
Answer: 28. A
26. E
23. C
Explanation:
Only know a couple sorry
5. Describe how the properties of elements in the same group differ to the properties of elements in the same period.
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.
5. How do ocean currents impact land temperatures? 1.Winds from the land help drive ocean currents. 2.Winds from the ocean bring temperatures related to the ocean currents. 3.Ocean currents do not impact land temperatures. 4.Ocean currents bring temperatures away from the nearby land.
Answer:
the answer is the option 4
Explanation:
i believe its number 4 because when you live near a beach the temperature is cooler
The gas release during a chemical reaction which causes fizzing known as?
Answer:
Hey mate...
Explanation:
This is ur answer....
EffervescenceEffervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from that release.
Hope it helps!
Brainliest pls!
Follow me! ♧
Explanation:
Your answer is effervensecence
covalent compounds are generally made up of elements found in which part of the periodic table?
Answer:
elements from group four to eight
(BRAINLIEST FOR CORRECT AND BEST EXPLAINED ANSWER) What properties distinguish solids, liquids, gases, and plasma from each other?
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
Carbonated beverages contain dissolved carbon dioxide gas. Which temperatures are best for the liquid while it is being produced in the factory?
A. High temperatures are best to minimize the solubility.
B. High temperatures are best to maximize the solubility.
C. Low temperatures are best to minimize the solubility.
D. Low temperatures are best to maximize the solubility.
Please answer and thankyou!
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.
To know more about carbonated beverages here
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science need ko po ng help di mo ako kase matalino salamat po
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