Answers
Answer:Calcium hydroxide is a polar compound. 2. Carbonates are insoluble in water unless it is combined with NH4+ or any group 1A ion. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed, or slaked with water.Ca(OH)2 is an ionic compound, in which Ca is the cation and OH is the anion. Ca (calcium) has a charge of 2+, since it is in group 2 on the periodic table.
Explanation: hope this helps and have a great night
Related Questions
What is the Noble gas electron configuration of lead (Pb)?
Answers
Which element is malleable and ductile?
A. Phosphorus
B. Argon
C. Sodium
D. Chlorine
Can you help me answer all of these I’ll mark brainliest
Answers
Answer:
C.) Sodium
Explanation:
Sodium is an "Alkali Metal"
This is IXL pls hurry pls! SOS major
Answers
Answer:
the same as
Explanation:
that's what makes the most since to me but i may be wrong
I’m stuck on number 2
Answers
14) Propane, C3H8, is a hydrocarbon that is commonly used as fuel for cooking.
a) Write a balanced equation for the complete combustion of propane gas, which yields CO2(g) and
H2O(l).
b) If 10.0 g of propane undergo combustion, how many moles of oxygen will be consumed?
c) Assuming that air is 21.0 percent O2 by volume, calculate the volume of air needed to completely
combust 10.0 g of propane at 30oC and 1 atm
d) If the combustion of propane produces 2220 kJ/mole, how much energy is produced when 30.0 g
of propane undergoes complete combustion?
e) If the process described in d) above occurs in a calorimeter containing 8.25 kg of water, calculate
the change in temperature of the water that would be observed.
Answers
Squirrels eat acorns for energy and to grow and repair tissues. How is an acorn used to build squirrel muscle?
The elements in the acorn can be rearranged to make the molecules the squirrel’s body needs
The energy from the acorn warms any damaged muscle and allows it to repair itself and heal
The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells
Once the acorn has been digested by the squirrel, the carbohydrates are converted to muscle tissue
Answers
Answer:
The elements in the acorn are rearranged to make the molecules the squirrel's body needs. The proteins found in acorns are the same as squirrel muscle proteins, so they attach to muscle cells.
Explanation:
hpoe this helps
How many particles are in 1.43 g of a compound with a molar mass of 233? (No molar mass calculation needed) (show work plz)
Answers
Answer:
Explanation:
mol = given mols / molar mass
given mass = 1.43 grams
molar mass = 233
mols = 1.43 / 233 = 0.00614
1 mol contains 6.02 * 10^23 particles
0.00614 moles = x Cross multiply
1*x = 0.00614 * 6.02*10^23
x = 3,68 * 10^21 particles.
14
Use the data in the table to work out the state of each substance at 25 °C. *
(3 Points)
Substance
Melting point (°C)
Boiling point (°C)
State at 25 °C
methane
-182
-164
dodecane
-10
216
phenol
43
182
(3 marks)
Enter your answer
This question is required.
16
Answers
Answer:
Explanation:
The melting point of a substance is the temperature at which its melt. The state of a substance is dependent on it's melting temperature. Generally, melting point above 25 °C is a solid.
This means phenol is a solid
Duodecane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of 216 °C means it would require higher temperature to boil it. Since 25 °C is less than 216 °C it means that it would remain in the liquid state.
Methane has melting point below 25 °C hence it is either a liquid or gas. However its boiling point of -164 °C means it boils easily even at very low temperatures. Since 25 °C is greater than -164 °C it means that it would exist in the gaseous state
What is weather?
a
The atmospheric conditions over many days, weeks, months, and years.
b
The atmospheric conditions for a particular moment in time.
c
The atmospheric conditions forecasted for the next season.
Answers
A substance has a mass of 22g and a volume of 13cm3. What is the density of the
substance? *
Answers
Answer:
1.69 g/cm³
Explanation:
Mass (m) = 22 g
volume (v) = 13 cm³
density (d) = ?
we know density is defined as mass per unit volume
d = m/v
= 22 / 13
= 1.69 g/cm³
Hope it will help :)
Plz help :’(
Using structural formula, write a balanced equation for the following and name the organic product.
2-methylbutan-1-ol + hot conc H2SO4
Answers
Explanation:
2-metylbutene should be the profuct
When 20g of hydrogen gas will react with 20g of chlorine gas, what is the mass of hydrogen chloride formed?
Answers
Answer:
40g
Explanation:
equation; H2 + Cl2 ---- 2HCl
mole ratio; 1 mole 1 mole 2 moles
before reaction;20g 20g 0g
after reaction; 20g 20g 40g
summarize what happens to a balls energy when it bounces?
Answers
Answer:
When a ball bounces, it initially gains speed or kinetic energy—the energy of motion. When it reaches Earth, it collides head-on with an incredibly massive object that is, from your perspective, at rest. The ball slows down, deforms temporarily and shoots back up.
Explanation:
I hope this helps.
Answer:
When you hold the ball in the air, the ball has gravitational potential energy. Realizing it will turn the potential energy into kinetic energy. When the ball touches the ground, the kinetic energy will turn into elastic potential energy. When it bounces back up, it will turn into kinetic energy. When the ball is in that position where the ball was being held, it will have gravitational potential energy and repeat the cycle.
Explanation:
Terms to know:
Gravitational potential energy is the energy of an object that possesses because of its position in a gravitational field.
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
Kinetic energy is the energy that objects posess due to motion.
How many moles are in 568 grams of Gold?
Answers
What is the concentration of sodium ions in 0.185 M Na2CO3?
Answers
Answer:
0.370 M
Explanation:
Step 1: Given data
Molar concentration of the sodium carbonate solution: 0.185 M
Step 2: Write the balanced dissociation equation
Sodium carbonate is a strong electrolyte that dissociates according to the following equation.
Na₂CO₃(aq) ⇒ 2 Na⁺(aq) + CO₃²⁻(aq)
Step 3: Calculate the molar concentration of sodium ions
The molar ratio of Na₂CO₃ to Na⁺ is 1:2.
0.185 mol Na₂CO₃/L × 2 mol Na⁺/1 mol Na₂CO₃ = 0.370 mol Na⁺/L
ammonia gas occupies a volume of 57.9 L at a pressure of 532.4atm. if the pressure were lowered to 256.8atm,what would the new volume be
Answers
Answer:
683838447745 anmmlllkkkkk
What is the rate of reaction
Answers
Answer:
The reaction rate is defined as the amount of substance that is transformed into a given reaction per unit volume and time.
Where is the main asteroid belt in the solar system?
Answers
Answer:
It's between Jupiter and Mars.This person is fishing in a small, freshwater body of water. This body of water flows into a larger body of water called a river. What is this small body of freshwater called?
Answers
Answer:
Explanation:
The smallest body of water is the brook, a natural stream of water that is found aboveground and is often called a creek as well. A brook is usually a tributary (a small body of water that naturally flows into a large one) of a river, but this is not always the case.
Answer:
pond
Explanation:
Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
Answers
-hope it helps
Answer:
Explanation:
you sack
which gas is used in flying balloons ?
Answers
Answer:
hydrogen
Explanation:
can i have brainliest please
as a rollercoaster goes downhiQuestion 2 options:
kinetic energy is converted into potential energy
potential energy is converted into kinetic energy
electrical energy is converted into potential energy
potential energy is converted into electrical energy
ll
Answers
Answer:
b potential hope this is right
NEED HELP ASPA WILL MAKE THE BRAINIEST ANSWER
A student captures 0.50
moles of hydrogen (H2), oxygen (O2), chlorine (Cl2), carbon dioscide (CO2), and carbon monoxide (CO) gas in separate, evacuated flasks.
Arrange the flasks of gases in order of increasing grams of gas.
.H
H
H2
H2
Answers
Answer: [tex]H_2[/tex] < [tex]CO[/tex] < [tex]O_2[/tex] < [tex]CO_2[/tex] < [tex]CL_2[/tex]
Explanation:
According to avogadro's law, 1 mole of every substanceweighs equal to its molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
1. Mass of [tex]H_2=moles\times {\text {Molar mass}}=0.50moles\times 2g/mol=1g[/tex]
2. Mass of [tex]O_2=moles\times {\text {Molar mass}}=0.50moles\times 32g/mol=16g[/tex]
3. Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.50moles\times 71g/mol=35.5g[/tex]
4. Mass of [tex]CO_2=moles\times {\text {Molar mass}}=0.50moles\times 44g/mol=22g[/tex]
5. Mass of [tex]CO=moles\times {\text {Molar mass}}=0.50moles\times 28g/mol=14g[/tex]
Thus the flasks of gases in order of increasing grams of gas is:
[tex]H_2[/tex] < [tex]CO[/tex] < [tex]O_2[/tex] < [tex]CO_2[/tex] < [tex]CL_2[/tex]
What will be the volume occupied by 100 grams of oxygen gas
at STP?
Answers
Answer:70L
Explanation:
The volume occupied by 100g of oxygen gas at STP is 70L.
1 mole of a gas at STP occupies 22.4 L volume.
The same goes for oxygen gas, [tex]O_2[/tex]. 1 mole of [tex]O_2[/tex] occupies 22.4L volume.
Now the molar mass of [tex]O_2[/tex] is = 32g
So the number of moles of [tex]O_2[/tex] in 100g is
n = 100/32
n = 3.125 moles
Volume occupied by 3.125 moles or 100g of [tex]O_2[/tex] is
V = 3.125 × 22.4 L
V = 70 L volume is occupied by 100g of oxygen gas.
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https://brainly.com/question/19958403
Body Color is a ___________
Variation
Trait
Feature
Observation
Answers
Solder is a silver metal used to hold pipes together. When the solder is heated, it melts and acts as a type of metal "glue." Mrs. Hanley heats a piece of solder until it melts between two pipes. What best identifies the point at which a physical change first takes place?
A)when the solder melts
B)when the solder cools down
C)when the solder is a soft metal
D)when the solder becomes solid again
Answers
Answer:
A
Explanation:
I need help ASAP pls the last question
Answers
Answer:When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed. ... The particles exert more force on the interior volume of the container. This force is called pressure.
Explanation:
Why do not all rock types contain fossils?
Excessive heat and pressure can destroy fossils.
Fossils can only be created in certain places around the world.
Fossils cannot be created near volcanoes.
Fossils are too large to be found in igneous and metamorphic rocks.
Answers
Answer:
Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions. Generally it is only sedimentary rocks that
Explanation:
Hope it helps, some how.
Your welcome :)
Kinetic energy is energy stored in an object due to its position.
True
Or
False
Answers
Answer:
[tex]\boxed {\boxed {\sf False}}[/tex]
Explanation:
Kinetic energy is the energy of movement or energy at work. An example is a ball rolling down a hill.
Potential energy is stored energy due to the position of an object. For example, a ball resting at the top of a hill.
The question incorrectly described potential energy as kinetic energy. Therefore, the answer is false.
Due to changes in the environment, having lighter-colored fur becomes a
survival advantage in a population of wolves.
What is most likely to happen in the next generation?
Answers
Answer:
There will be more light-colored wolves.
Explanation:
Evolution is based off the survival of those with the most advantages in the wild. Since their light coat gives them a survival advantage, they will reproduce more.