Answer:
C po answer ko
Explanation:
thznk chou
Determine the element, given the number of protons in an atom
One day, Snoopy bought gas at $2.02 per gallon. How many minutes could Snoopy travel at 55.1 mi/hr if he bought $22.50 of gas and his fuel economy is 22.1 mi/gal?
Answer:
34
Explanation:
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.
What might the student have done that caused this
error? List all possible causes.
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
What is caused by the suns and mom gravitational pull on the earth
Answer:
earth quakes, tornados, hurricans
If there are more shells does the nuclear charge decrease
Answer: Yes, if there are more shells the nuclear charge decreases.
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
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.
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calculate the number of moles of Cu in 2.4x10^21 atoms of Cu
Answer:
0.004 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{2.4 \times {10}^{21} }{6.02 \times {10}^{23} } \\ = 0.003986[/tex]
We have the final answer as
0.004 molesHope this helps you
Explain what it means for an atorn to be neutral.
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?
The accuracy of a measurement
??
Answer:
-indicates that the measurement is also precise.
Explanation:
Pretty sure it's option 2.
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
A sample of Element X is found to contain 82.15% of isotope type 1 (84.9118 amu)
and 17.85% of isotope type 2 (86.9092 amu). Calculate the average atomic
mass.
Answer:
Have you gotten your answer yet?
The average atomic mass of element X is 85.26 amu.
To calculate the average atomic mass of Element X, we need to take into account the abundance of each isotope and its respective atomic mass.
First, let's assign variables to the abundance and atomic mass of each isotope:
- Isotope 1: abundance = 82.15%, atomic mass = 84.9118 amu
- Isotope 2: abundance = 17.85%, atomic mass = 86.9092 amu
To calculate the average atomic mass, we can use the following formula:
average atomic mass = (abundance₁ ×atomic mass₁) + (abundance₂ ×atomic mass₂)
Substituting the values:
average atomic mass =
[tex]\dfrac{82.15\times84.9118}{100}+\dfrac{17.85\times86.9092}{100}\\=85.26 \ \rm{amu}[/tex]
Thus, average atomic mass of element X is 85.26 amu.
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Help me pls due tomorrow
1.003
3.441
2 O
first
third
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
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
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
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:
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
The struggle between organism to suvuve in a habitat with limited resources is called
It's called "competition"
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.
How many moles of HCl can be produced from 0.207 g of SOC12 SOC12(1) + H2O(1) = SO2(g)+ 2HCl(g)
Answer:
.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂
Explanation:
The balanced reaction is:
SOCl₂ + H₂O ----> SO₂ + 2 HCl
By stoichiometry of the reaction they react and produce:
SOCl₂: 1 mole
H₂O: 1 mole
SO₂: 1 mole
HCl: 2 mole
Being:
S: 32 g/mole
O: 16 g/mole
Cl: 35.45 g/mole
H: 1 g/mole
the molar mass of the compounds participating in the reaction is:
SOCl₂: 32 g/mole + 16 g/mole + 2*35.45 g/mole= 118.9 g/mole
H₂O: 2*1 g/mole + 16 g/mole= 18 g/mole
SO₂: 32 g/mole + 2*16 g/mole= 64 g/mole
HCl: 1 g/mole + 35.45 g/mole= 36.45 g/mole
Then, by stoichiometry of the reaction, the following amounts of mass react and are produced:
SOCl₂: 1 mole* 118.9 g/mole= 118.9 g
H₂O: 1 mole* 18 g/mole= 18 g
SO₂: 1 mole* 64 g/mole= 64 g
HCl: 2 mole* 36.45 g/mole= 72.9 g
Then the following rule of three can be applied: if by stoichiometry of the reaction 118.9 grams of SOCl₂ produce 2 moles of HCl, 0.226 grams of SOCl₂ how many moles of HCl do they produce?
moles of HCl= 3.80*10⁻³
3.80*10⁻³ moles of HCl can be produced from 0.226 g of SOCl₂
For a substance to change from a gas to a liquid the particles must _____
Answer:
The gas particles must touch a cold surface to start to slow down and get closer to form a liquid.
( BRAINLIEST)
Which Salt is formed when Ammonia reacts with Nitric acid ?
Answer:
When nitric acid reacts with ammonia, ammonium nitrate is formed.
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
covalent compounds are generally made up of elements found in which part of the periodic table?
Answer:
elements from group four to eight
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
Aristonun teorisini çürüten bilim adamı
homogeneous or heterogeneous ang ibig sabihin ng dalwang ito
Answer:
tae nimo par and thankyou
Explanation:
i hope its help