Answers
Ca(OH)2 +2 HBr → CaBr2 + 2 H2O
Related Questions
What is a control group?
A group that changes the variable
The group that applies the variable
The group that tests the variable
A test group where the variable is not changed or applied Which of the following objects is transforming electrical energy into energy of motion?
Answers
Answer:
The group that tests the variable.
Explanation:
The group that tests the variable is a control group.
Answer:
C when testing the group put the varible in control
Based on the graph, what is the approximate half-life of the reaction shown below
Answers
Answer: 2.1 minutes
Explanation: Based on the graph, what is the approximate half-life of the reaction shown below
Which chemical equation below shows a combination (or synthesis reaction?
A) 2KClO3 —> 2KCI+3O2
B) C+ O2 —> CO2
C) 2H2O —> 2H2 + O2
D) NaCl —> Na + Cl
Answers
Answer is C
A synthesis reaction looks like this:
A+ B → AB
oxygen is odorless and colorless physical or chemical
Answers
Answer:
(Physical or Chemical) properties of a substance can easily be observed. … (Physical or Chemical) properties can be used to identify substances. physical property. Oxygen is odorless and colorless.
Explanation:
In order for a chemical reaction to take place, a certain amount of _____ must be present.
Answers
Answer:
The answer is energy. Please give me Brainliest!
Explanation:
Raising the concentrations of reactants makes the reaction happen at a faster rate. For a chemical reaction to occur, there must be a certain number of molecules with energies equal to or greater than the activation energy.
Write the chemical formulas and names for the following ionic compounds. Cobalt (III) and bromine
Answers
Answer:
CoBr2,CoBr2·6H2O,CoBr2·2H2O
Explanation:
What color does red cabbage juice change in ammonia?
Answers
Answer:
Green
Explanation:
Ammonia turns the cabbage juice into a blue/green color because it is a base, a material that tastes bitter and makes an acid neutral.
Answer:
green
Explanation:
I did the experiment
Volcanoes will most likely form along a convergent plate boundary that is....
A. Continental vs Continental
B. Continental vs Oceanic
C. None of the above.
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Answer:
I think its b part or none of above
How do covalent compounds differ from ionic compounds?
Answers
Answer:
1. Ionic bonds result from transfer of electrons, but covalent bonds are formed by sharing.
2. Ions are arranged in a three-dimensional array (like crystals). Covalently bonded substances exist as discrete molecular units.
3. Ionic compounds often dissociate into ions in solution, but covalently bonded molecules retain their molecular identity in solution.
Hope this helps :)
Identify the following element: a metal, 2 valence electrons, +2 oxidation number, valence electrons are in period 4.
Answers
Answer:
Calcium
Explanation:
I just checked the periodic table! This is right checked twice, I hope this helped first time answering a question. Good luck!
4. Initially, 1 mol of oxygen (assumed to be an ideal gas) has temperature 310 K and volume 12 L. We will allow it to expand to volume 19 L. (a) What would be the final temperature if the gas expands adiabatically
Answers
Answer:
490.83 oK
Explanation:
First of all, we better agree on the meaning of the word adiabatically. It means without the loss or gain of heat. So nothing is given up to or taken from the environment.
This also assumes that no change has occurred in the pressure.
T1 = 310 oK
T2 = ?
V1 = 12 L
V2 = 19 L
T1/V1 = T2/V2
310 / 12 = x/19 Multiply both sides by 19
310*19 / 12 = T2 Multiply 310 * 19 on the left.
5890 / 12 = T2 Divide by 12
490.83 = T2
Nylon is a synthetic material that has many uses. It is used in the production of machine parts, cookware, and fabric. Nylon is made from petroleum and natural gas. Suppose that there were a shortage of petroleum and natural gas. What would companies that produce nylon likely need to do? A. identify a different natural resource that nylon could be made from B. search for nylon in many different parts of the earth C. convert existing nylon back into petroleum and natural gas D. find a way to make nylon without using natural resources
Answers
In case of a shortage in petroleum and natural gas, a company should find a way to make nylon without using natural resources.
Nylon is a very important material used in numerous applications. As a result of this, the demand for nylon as a raw material has genuinely been on the high side ever since.
However, nylon production depends on petroleum and natural gas. It is possible that there could be a shortage of these resources since they are obtained from the environment. In such cases, a company should find a way to make nylon without using natural resources.
Learn more about polymers: https://brainly.com/question/17555341
Answer:
identify a different natural resource that nylon could be made from
Explanation:
I just did this question
Which of these substances is commonly refined by electrolysis?
brine
rust
titanium
water
Answers
I believe the answer would be titanium. Good luck on your assignment and have a happy christmas :)
31.) How far can a rock fly(meters). if the slingshot has a total potential of 500 Joules, and when releasing the slingshot exerts a total amount of 25 Newtons?
Answers
Which is the correct definition of electronegativity?
Answers
Answer:
Electronegativity is defined as the tendency of an atom participating in a covalent bond to attract the bonding electrons
Explanation:
Electronegativity increases and you go up and to the right, making fluorine the most electronegative element.
A force of 5N accelerates an object. The object mass is 50 g. What is the acceleration of an object?
Answers
Answer:
100 m/ s²
Explanation:
Newton's Second Law of Motion:
[tex] \boxed{ \mathsf{force = mass \times acceleration}}[/tex]
___________________
In the question:
Force applied = 5 N mass of the object experiencing force = 50 gNote that the quantities here must be in their SI units.
SI unit of Force is Newton(N).
SI unit of mass is kilogram(kg)
Force is already in it's SI unit, while mass isn't.
Converting mass from grams to kilograms:
1000 g = 1 kg
=> 1 g = 1/ 1000 kg
=> 50 g = 50/ 1000 kg
= 1/ 20 kg
___________________
Calculating acceleration:
[tex] \mathsf{5 = \frac{1}{20} \times acceleration }[/tex]
multiplying both sides by 20:
[tex] \implies \mathsf{5 \times 20= (\frac{1}{20} \times 20)\times acceleration }[/tex]
20 on the RHS gets canceled, for it's present on the numerator as well as the denominator.
[tex] \implies \mathsf{100= acceleration }[/tex]
So, here, we got acceleration = 100 m/s².
Since, the other quantities used in the formula are in their SI units, acceleration must be in it's SI unit as well.
The SI unit of acceleration is m/s²
___________________
Answer:
[tex] \boxed{ \mathsf{100 \:m/s^2= acceleration }}[/tex]
50 POINTS!!!! PLEASE HELP I AM BEGGING!!!!!!
3CH4 and C3H12 have the same number and kind of elements. How are they different?
Answers
compound and C3H12 refers to only one
molecule of a compound.
3CH4 and C3H12 are actually different
molecules though they contain the same
number and types of atoms. Recall that both
of them are hydrocarbons hence they
contain only hydrogen and carbon.
3CH4 refers to three molecules of methane
while C3H12 refers to one molecule of
diphenyl methane. Hence 3CH4 refers to
three molecules of a compound and C3H12
refers to only one molecule of a compound.
What foods have been allowed or banned in which countries? Why?
please please help me
Answers
Marmite was banned in Denmark in 2004 because of a law that resourced food products that were fortified with vitamins. Marmite had yeast extract. Technically, Denmark hasn’t banned Marmite, it’s more the additional vitamins minerals and such.
Haggis was banned in the US dba sue it contained sheep lung, which violates federal safety regulations.
McCain Brand French Fries have been banned in several countries, such as the UK and Australia, because it has a asthma including chemical called azodicarbonamide
Which one is the answer?
Answers
Answer:
I think 1, 4, and 5 are the answers to this question. I am not sure about 4 though.
Explanation:
You have to have a power source (1), you also have to have a way to get that power somewhere else (5), and the reason for 4 would be that the power has to come back through the power source to remain working.
which statement describes how vapor pressure occurs? (1 point)
a) Some molecules of a substance have high enough kinetic energy to vaporize. These molecules exert
pressure on the substance.
b) Some molecules of a substance have low enough kinetic energy to melt. These molecules exert pressure on the substance
c) Some molecules of a substance have low enough kinetic energy to vaporize. These molecules exert
pressure on the substance.
d) Some molecules of a substance have high enough kinetic energy to melt. These molecules exert pressure on the substance
Answers
Some molecules in a substance have a high kinetic energy hence they are able to convert into vapor. These molecules exert pressure on the liquid surface.
We know that the molecules that compose matter are in constant random motion. The kinetic energy of all the molecules in the liquid are not the same. The molecules at the surface of the liquid posses more kinetic energy than the molecules below.
Some molecules of a substance have high enough kinetic energy to vaporize. These molecules exert pressure on the substance.
Learn more: https://brainly.com/question/25273232
Answer:
Some molecules of a substance have high enough kinetic energy to vaporize. These molecules exert pressure on the substance.
Explanation:
Is this a male cat or female?
Answers
Explanation:
Lift the kitten's tail. The opening just under the tail is the anus. Below the anus is the genital opening which is round in males and is a vertical slit in females. In kittens of similar size, the distance between the anus and the genital opening is greater in the male than the female.
TW: use of inapropate words*
Answer:
not enough information to tell
Explanation:
One way you can tell this difference is the distance between the cat's genitals (organs seen on the outside of the body) and the anus. A male will have a much greater distance between the genitals and anus than females, 1/2 inch apart on a male kitten and over 1 inch apart on a male adult cat. However, if the two are almost adjacent on a kitten or less than 1/2 inch apart on an adult, it’s a female.
PC13 ionic or covalent
Answers
Answer:
The bond between Phosphorus and Chlorine in PCl3 is covalent as chlorine needs one electron and phosphorus has metallic character and easily donate electron
Atoms with the same number of protons but with different electrical charges are called:
Answers
Answer:
It is called ions
Explanation:
The characteristics “fingerprints” of light produced when a substance is given energy are called…
A. Groundlings
B. Quantums
C. Spectrums
D. Amplitudes
Answers
A spectrum is a pattern is unique to a substance and can be used identify it.
According to Max Plank, energy occurs in packets called quanta. Hence, energy is not continuous but takes on discrete values which are integer multiples of a fundamental amount.
Again, when a substance is given light energy, a characteristic fingerprint is obtained. This pattern is unique to the substance that has it. These characteristics “fingerprints” are called spectrums.
Learn more: https://brainly.com/question/6284546
calculate the speed of a train that travels 540 km in 9 hours
Answers
Answer:
s=d/t. d=540 t=9h
540÷90=6 km/h
If a number has the units g/L then its
A) a number we are not going to use at all.
B) an imaginary unit that we are not going to use.
C) creating a relationship between mass and volume
D) a relationship between volume and distance.
Answers
Answer:
C) creating a relationship between mass and volume
g/L
g or gram is mass
L or Litres is for volume
Which of the following is a binary compound?
Answers
Took the test already.
giving brainly if correct!
complete the chart above
Answers
Answer:
I hate chemistry good luck alice
Analyze the reaction of solid magnesium and water. Which pair of reactants and products in the table below represent the correct balanced equation for the reaction?
Answers
Answer:
3 is correct answer I think
Explanation:
Labor unions arose in the nineteenth century as increasing numbers of Americans took jobs in factories, mines, and mills in the growing industrial economy.
The Knights of Labor, founded in 1869, was the first major labor organization in the United States. The Knights organized unskilled and skilled workers, campaigned for an eight hour workday, and aspired to form a cooperative society in which laborers owned the industries in which they worked.
The Knights’ membership collapsed following the 1886 Haymarket Square riot in Chicago. By 1886 the American Federation of Labor (AFL), an alliance of skilled workers’ trade unions, was growing.
Someone help me with this asap for 5p points and BRAINLIEST THANK YOU
Answers
Answer:
High trainability allows the owner to train the dog to handle certain things--some dog can be trained as police dogs and can be taught various jobs, so high trainability is very important
When a dog is Viscous, the dog will keep people away from your house, they will be able to keep danger away and because they are viscous they will be able to handle danger.
Loud bark- A loud bark from a dog can help alert other people when there is a intruder, it makes alot of noise so they can attract attention easily.
Quiet Bark- Ideal for pet owners who do not like noise, they bark quietly so they are not a bother to work or anyone doing something.