Explanation:
Temperature has a direct relationship with reaction rate. The higher the temperature the faster the rate of reaction of a system.
For every 10°C rise in temperature above the room temperature, it has been found that reaction rates becomes double or triple. When the temperature of a reacting system increases, the kinetic energy of each of the reacting particles increases. The frequency of collision and effective collision also increases per unit of time. Many of the reacting particles will acquire an energy greater than or equal to the activation energy of the reaction.Which of the following is an example of a mixture?
A. Ca
B. CO2 + H2 + O2
C. NaCl
D. C6H12O6
The first one to help me will get the brainliest and 50 points UwU
Answer:
B is because their not combined
Answer:
tru it's B
Explanation:
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When heat from the sun turns water into water vapor this is called?
A) condensation
B) runoff
C) precipitation
D) evaporation
How does a thermometer measure temperature?
Which manufacturing process is shown in the photograph?
O A. Forming
B. Combining
C. Conditioning
D. Separating
Answer:
c
Explanation:
18 gram of sucrose is dissolved in 180 gram of water. Calculate the number of oxygen atoms in the solution.
answer: 6.684×10^24
We know, molecular mass of sucrose is 342 g/mol.
So, number of moles in 18 g is :
[tex]n_1 = \dfrac{342\ g/mol}{18\ g}\\\\n_1 = 0.053 \ moles[/tex]
Also, number of moles of water is :
[tex]n_2 = \dfrac{180}{18} \\\\n_2 = 10 \ moles[/tex]
We know, 1 mole of sucrose contain 11 moles of oxygen.
So,
[tex]n' = 0.053\times 11\\\\n'= 0.583\ moles[/tex]
1 mole of water contain 1 mole of oxygen .
So, moles of oxygen in water are :
[tex]n'' = 10\ moles[/tex]
Total number of moles, [tex]n' + n'' = 10.583 \ moles[/tex] .
Number of oxygen atoms are :
[tex]N = 6.022 \times 10^{23}\times 10.583\\\\N = 6.37 \times 10^{24}[/tex]
Hence, this is the required solution.
How do you decide which conversion factor to use?
Answer:
When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot. To convert minutes to hours, the appropriate conversion value is 60 minutes equal 1 hour
Explanation:
hope this helps have a good night/day :) ❤
Is water wet? This is a discussion for easy points so I suggest you answer it.
Answer:
Water isn't wet by itself but it makes other materials wet. Like paper, clothes, shoes, etc.
Explanation:
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37.9 grams of unknown substance undergoes a temperature increase of 25.0°C after absorbing 989 J. What is the specific heat of the substance?
The specific heat of the substance : c = 1.044 J/g °C J/g °C
Further explanationGiven
Heat absorbed by substance = 989 J
m = mass = 37.9 g
Δt = Temperature difference : 25 °C
Required
The specific heat
Solution
Heat can be formulated
Q = m.c.Δt
Input the value :
989 = 37.9 x c x 25
c = 989 : (37.9 x 25)
c = 1.044 J/g °C
to multiply food with the help of a simple machine
Answer:
Explanation:
Inclined Plane: Easy Lifting. An inclined plane is simply an even, sloping surface. ...
Wedge: Splitting and Separating. ...
Screw: Fastening and Moving. ...
Lever: Multiplying Force. ...
Wheel and Axle: Rolling. ...
Pulley: Hoisting Heavy Loads. ...
Scissors: Making the Cut. ...
Hand Truck: Mover's Friend.
A small portion of the periodic table of the elements is reproduced here showing eight elements and the groups to which they belong.
Based on its position on the periodic table, which column of elements would be most likely to chemically combine with lithium in 2:1 ratio?
it is 2.1 that it is his w ga hshshwu
S
SIO₂ +3C Sic +20o
Sic ? mass in grams
С c-
Answer:
26.74g
Explanation:
The equation of the reaction is;
SIO₂ + 3C --> SiC +2CO
From the balanced equation, the relationship between SiC and C is;
3 mol of C produces 1 mol of SiC
Converting mol to mass using; Mass = moles * Molar mass
Mass of SiC = 1 mol * 40.11 g/mol = 40.11g
This means;
3 mol of C produces 40.11g of SiC
2 mol of C produces xg of SiC
3 = 40.11
2 = x
x = 2 * 40.11 / 3 = 26.74g
Help me with this one please
Single replacement/displacement
Further explanationGiven
Type involves free element
Required
Type of reaction
Solution
Single replacement/displacement occurs when a more active element replaces another less active element in the compound to form a new compound
The activity of this element can be seen from the voltaic series
Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au
The more to the left, the element is more reactive (easily release electrons) and the stronger reducing agent
The general formula for single replacement :
A + BC ⇒ AC + B
From this general formula shows that there are 2 free elements on both sides (reactants and products)
4. Two bulbs have a resistance of 20 ohms when working normally. They are placed in a series
circuit whey they operate normally. What is the combined resistance of the two bulbs?
(1 Point)
22 ohms
20 ohms
10 ohms
40 ohms
Answer:
R = 40 ohms
Explanation:
Two bulbs have a resistance of 20 ohms when working normally.
When they are placed in series, the combined resistance is given by :
R = R₁ + R₂
We have, R₁ = R₂ = 20 ohms
R = 20 +20
= 40 ohms
Hence, the combined resistance of the two bulbs is 40 ohms.
Which property of metals makes them good conductors of heat
Answer:
the molecules are tightly bound together, making it easy for electric currents to jump from one molecule to the next.
Explanation:
Answer:
They are good conductors of thermal energy because their delocalised electrons transfer energy. The close packing of the metal ions in the lattice. the delocalised electrons can carry kinetic energy through the lattice.
Explanation:
define the term "filtration"
Answer:
the action or process of filtering something. hope this helps :D
4. The type of thermal energy transfer that heats our homes is called
Answer:
conduction is the answer
Hydrogen ions _____.
are hydrogen atoms which have lost protons
are released by bases
have positive charges
have negative charges
are hydrogen atoms which have lost protons
why is the sky orange and red at sunset
At sunset the light from the sun grazes across the surface of the earth, passing through a long column or pathlength of atmosphere. During its passage through the atmosphere the blue components of the light are reduced in intensity, making the transmitted beam of sunlight more yellow or even red in color.
hope this helps ^^
Answer:
Here ya go ;)
Small particles of dust and pollution in the air can contribute to (and sometimes even enhance) these colors, but the primary cause of a blue sky and orange/red sunsets or sunrises is scattering by the gas molecules that make up our atmosphere. ... In this way, clouds act as a screen on which nature's colors are painted.
4. A sample of gas has a pressure of 700 mmHg and 30.0°C. Ar what temperature would the pressure be 600 mmHg if the volume remains constant?
Answer:
T₂ = 259.84 K
T₂ = -13.31 °C
Explanation:
Given data:
Initial pressure = 700 mmHg
Initial temperature = 30.0°C (30+273.15 K = 303.15 K)
Final temperature = ?
Final pressure = 600 mmHg
Solution:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
Now we will put the values in formula:
700 mmHg /303.15 K = 600 mmHg / T₂
T₂ = 600 mmHg × 303.15 K / 700 mmHg
T₂ =181890 mmHg.K /700 mmHg
T₂ = 259.84 K
Temperature in celsius
259.84 K - 273.15 = -13.31 °C
Ari dissolves 1 gram of sugar in 10 grams of water. What will be the mass of the dissolved sugar and water ? Explain your answer.
Answer:
the answer would be 11 grams of water/sugar water
Explanation: its that because 11 grams plus 1 gram = 11 grams
even though it may seem it may just go away that mass has to go somewhere it just doesn't vanish from the earth.
HELP ASAP I WILL GIVE BRAINLIEST
Which gas property in the chart above is extensive and cannot be used to identify the gas?
Specific heat of 0.98 J/g·°C
Density is 0.5 g/mL
Volume of 12.7 mL
Boils at -223°C
Answer
Boils at -223 degree C
Explanation:
Because gas doesn't have any boiling points
A reptile egg is shown in the diagram.
Y
Which best describes the function of the structure
labeled Y?
O food source
O protection
waste collection
gas exchange
HELP
Answer:Its D
Explanation:
Trust
Answer:
food source
Explanation:
Got 100%
HELP ME PLEASE: The image at the left shows three stars in the constellation Orion: Betelgeuse (A), Mintaka (B), and Rigel (C). How do the appearances of stars A, B, and C compare?
Answer:
B and C look blue therefore they are hot but A and C look big
The appearance of the three stars is compared by their colors and sizes.
In the image you can see the stars of the constellation Orion.
The star Betelgeuse (A) looks yellow and large (perhaps because of its closeness).The star Mintaka (B) is small (perhaps further away) and blue in color.The star Rigel (C) looks big and blue.According to the above, it can be inferred that the three stars differ in their colors and sizes. Their colors can be determined by the chemical composition of them, while their sizes by the distance that separates them from the Earth, making the farthest ones look smaller and the closest ones, bigger.
Learn more in: https://brainly.com/question/13387637
The law of conservation of matter states that matter is neither created nor destroyed in a chemical reaction. Which of the following must be true? *
A the mass of the products is greater than the mass of the reactants
B the mass of the products is less than the mass of the reactants
C the mass of the reactants must equal the mass of the products
Answer:
A
Explanation:
Can somebody plz help answer this science questions (only 1-2 sentences is good thx !
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Answer:
Blue is the metal Metals react by losing electrons from the outermost shell, which means their outermost electrons and now closer to the nucleus (one shell lower) and thus they get smaller when you go from metal atom to metal ion.
Explanation:
How many Chorine atoms should bond with one Aluminum atom?
Answer:
three chlorine atoms
Explanation:
How can you increase an object's kinetic energy?
Please write down the definitions of elements, compounds, mixtures, homogenous mixtures, and heterogenous mixtures.
Organisms can be classified as
and
Answer:
Eukaryotes and prokaryotes
Explanation: