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What type of reaction is the following: Ca + S --> CaS
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Answer:
Combination reaction is taken during this reaction
Speed is the rate of change of position expressed as _____ traveled per unit of time. A. direction B. meter C. displacement D. distance
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Answer. Speed is the rate of change of position expressed as distance travelled per unit of time
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Answer:
distance
Explanation:
how can a chemical reaction be compared to shuffling a deck of cards?
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Answer:
The cards (matter) can be rearranged constantly, placed with others, the total or resent amount remains constant.
Explanation:
A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.
What is chemical reaction ?A chemical reaction is a procedure that causes one group of chemical components to change chemically into another.
We can learn about a substance's qualities by studying chemical reactions. We can learn about a substance's chemical characteristics by looking at how it interacts with other substances. These characteristics can be utilized to recognize an unidentified sample.
When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.
Thus, A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.
To learn more about chemical reaction, follow the link;
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Which of the following statements describes how humans would be affected if the ozone layer of Earth’s atmosphere were very damaged?
A. People would not spend as much time indoors.
B. The amount of food people eat each year would increase.
C. Human skin would burn much faster even with less exposure to sunlight.
D. Plants and flowers would grow much larger and produce more oxygen for people to breathe.
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i thank its B my big brother helped me we thank its b
Sodium oxide reacts with water to make sodium hydroxide.
1. Write and balance the equation.
2. List all the mole ratios.
3. How many moles of water are needed to react with 18.4 moles of sodium oxide?
4. How many grams of sodium hydroxide are formed when 4.5 moles of sodium oxide react with excess water?
5. How many grams of water are needed to make 5.65 moles of sodium hydroxide?
6. How many grams of sodium hydroxide are formed when 23.7 g of sodium oxide react with excess water?
7. How many liters of water are required to form 93.4 g of sodium hydroxide?
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Answer:
So the total mass is 50 plus 150 grams the heat capacity 4.18 joules per gram per degree C. And the temperature change is 36 minus 25 and so we can calculate Delta H for the reaction that takes place.
Explanation:
An ionic compound is what ?
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Answer:
In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding
Answer:
An Ionic compounds are compounds consisting of ions also held together by the attractive forces among the oppositely charged ions.
Explanation:
For example :
NaHCO3, sodium bicarbonate (baking soda; used in cooking)
NaCl, sodium chloride (common/ordinary salt)
Cuando se trata Ca3P2 con agua, los productos son Ca(OH)2 y PH3. Calcular el peso máximo obtenido al reaccionar 2 g de Ca3P2 con 1 g de H2O.
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Answer:
0.629 gramos de PH3 es la máxima de cantidad que puede ser producida.
Explanation:
¡Hola!
En este caso, dado que tenemos la siguiente reacción química, la cual se puede balancear directamente:
[tex]Ca_3P_2+6H_2O\rightarrow 3Ca(OH)_2+2PH_3[/tex]
Podemos calcular la masa máxima de cualquier producto, digamos PH3, al comparar la masa de este, que 2 g the Ca3P2 y 1 g de H2O producen por separado y de acuerdo a la estequiometría:
[tex]2gCa_3P_2 *\frac{1molCa_3P_2 }{182.18gCa_3P_2 }*\frac{2molPH_3}{1molCa_3P_2 } *\frac{34gPH_3}{1molPH_3 } =0.747gPH_3\\\\1gH_2O *\frac{1molH_2O }{18.02gH_2O}*\frac{2molPH_3}{6molH_2O} *\frac{34gPH_3}{1molPH_3 } =0.629gPH_3[/tex]
De este modo, infermos que solamente 0.629 gramos the PH3 pueden ser obtenidos al ser el agua el reactivo límite.
¡Saludos!
Which indicator would tell scientists the most about future climate change
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Three 10 g samples of sugar are represented in the diagram below. Sample A dissolves in water more slowly than sample B. Sample B dissolves more slowly than sample C. Which of the following best explains why Sample A dissolves most slowly?
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How long does it take for fruit flies to develop from embryos to adults?
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A gas is collected at 25.0 °C and 755.0 mm Hg. When the temperature is
changed to 0 °C, what is the resulting pressure?
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Answer:
691.7 mmHg is the resulting pressure
Explanation:
Tha Gay-Lussac's law states that the pressure of a gas is directly proportional to its absolute temperature under constant volume. The equation is:
P1T2 = P2T1
Where P is pressure and T asbolute temperature of 1, initial state and 2, final state of the gas.
Computing the values of the problem:
T1 = 273 + 25 = 298K
P1 = 755.0mmHg
T2 = 273 + 0 = 273K
P2 = ?
755.0mmHg*273K = P2*298K
691.7 mmHg is the resulting pressure
Traits are passed from parents to offspring. These traits are determined by
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Answer: Gene Characteristic. (They are usually made up of more than one gene).
Which choices are uses of electrical energy?
Choose all that apply.
A. creates useful gases
B. supplies energy for heat
C. provides power to lights
D. creates a magnetic force
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Answer:
option A,B and C.
are the options I chose.
The electrical devices include those that are needed to power appliances and those that are used in daily life. In order to make things operational, they need power or energy.
Electrical energy is taken from the movement of electronically charged particles. These when collide produce energy that can be used for heating, lighting, etc.Hence the option C is correct.
Learn more about the choices are uses of electrical energy.
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How can genetic mutations be passed to offspring?
A. In sex cells
B. In body cells
C. Through environmental factors
D. Through animal transmission factors
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Answer:
I think the answer is b
Explanation:
I hope this helps
The geometry of a ______________ makes it a very stable shape.
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Answer:
triangles
Explanation:
Wat two common uses for Zinc???
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Answer:
Zinc oxide is used in the manufacture of many products such as paints, rubber, cosmetics, pharmaceuticals, plastics, inks, soaps, batteries, textiles and electrical equipment.
Explanation:
States of Matter Escape Room
Matter is defined as anything that has
A. Phase changes and mass
B. Atoms and density
C. Color and weight
D. Volume and mass
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Answer:
A
Explanation:
matter has mass and undergoes a phase change
What are three similarities between biotic and abiotic factors?
i will give brainliest if you help me out !!!
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2. There are biotic objects on abiotic objects ( caterpillars on trees ) and abiotic objects on biotic things ( pollen on bees )
3. Both are made of atoms
binigyan ang isang liham ng pasasalamat at gagawin ko rin siya ng kabutihan sa ibang pagkakataon
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Answer:
what language do you speak?
¿A que se refiere la amplitud de una onda sinusoidal?
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The amplitude of the sine and cosine functions is the vertical distance between the sinusoidal axis and the maximum or minimum value of the function. In relation to sound waves, amplitude is a measure of how loud something is.
help help help help help
What is an action your citizens can take to prevent water waste?
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Ca + AgCl (Single Replacement Reactions) PLEASE HELP
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Answer:
2Ag + CaCl2
Explanation:
https://en.intl.chemicalaid.com/tools/equationbalancer.php?equation=Ca+%2B+AgCl+%3D+Ag+%2B+CaCl2 use that website for chemistry
What is the volume, in liters, of 573 g of SO2 gas at STP?
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Answer:
Explanation:
The answer is 202
5. The number of atoms in 9.2 g of Na will be: A. 6.2 x 1023 atoms B. 2.408 x 1023 atoms C. 9.2 x1023 atoms D. 23 atoms E. 9.2 atoms
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Answer:
The answer is "Option B"
Explanation:
Formula:
Na atoms= Na atoms moles \times NA
[tex]= \frac{mass}{Na \ Molar\ mass} \times 6.022 \times 10^{23}\\\\= \frac{9.2}{23} \times 6.022 \times 10^{23}\\\\=0.2875 \times 6.022 \times 10^{23}\\\\=2.4 \times 10^{23}\ atoms \\\\[/tex]
After getting a cut, you should wash it, even though it hurts. Why is it important to do this?
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Answer: It is important to wash it becasue that way you can disinfect the cut and protect the cut from any infections.
Answer:
This will reduce the risk of infection and help stop the bleeding. It gets rid of the bacteria that may have been there. But, it is very important to disinfect it and clean it properly after the bleeding stops.
If a 0.7 M solution of Ca(OH)2 dissociates completely in water, what is the
final [OH-]?
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Answer:
1.40 M [OH⁻]
Explanation:
This compound dissociates into 3 ions, but since we are asked about [OH⁻], it's only 2. Therefore, multiply the molarity of the solution by the number of ions that [OH⁻] dissociates into:
2 × 0.70 M = 1.40 M
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1pt which blood vessel carries waste-rich blood from the capillaries back to the healt?
O A. vein
OB. neuron
O C. vena cava
OD. aorta
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GUYS PLEASE HELP ME
giving brainliest
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2
Hope this helps :)
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A gold ring with a mass of 16g was dropped in the snow and its temperature dropped from 35°C to 0°C. How much heat was released by the gold? (specific heat of gold is .13)
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Answer:
-72.8 joules
Explanation:
just finished the test
How is a water wave similar to a pendulum?
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Answer:
side to side?
Explanation: