suppose you have unmarked bottles of water, sodium carbonate, silver nitrate, and barium chloride. could you tell which was which by looking at the bottles?
Answers
No, it is not possible to tell which bottle contains which compound just by looking at them.
All the compounds mentioned are colorless, odorless solids at room temperature and pressure, and they look similar in their solid form. Therefore, without any additional information or testing, it is impossible to identify the contents of each bottle just by looking at them. They also have similar physical properties such as similar melting points and densities. This makes it difficult to differentiate between them just by looking at the bottles. In order to identify the contents of each bottle, additional information or testing is required.
One common method of identifying compounds is through chemical analysis, such as testing for the presence of specific ions or functional groups using chemical reactions.
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Related Questions
In what type of reaction will an acid and a base react with each other?
oxidation-reduction
decomposition
combustion
neutralization
Answers
Answer:
answer is D
Explanation:
neutralization
Answer: Neutralization reaction
Explanation: lets look at it this way Since acids have pH below 7 ie pH 2 and bases have pH above 7 ie 13 so to "neutralize" the pH we add them together and thats how neutralization takes place !
What happened when the ball was pulled toward the center of gravity?
Answers
When the ball was pulled toward the center of gravity is the gravity pulls the ball towards the center of the earth.
The gravity pull the ball towards the center of gravity is due the gravitation force by earth acted on ball. the center of gravity is the point of ball where the weight is distributed in all direction. The center of gravity of uniform ball is at the geometrical centre. if we through a ball in upward direction , the force of gravity pull the ball in downward direction . The force of gravity is directly proportional l to the mass of two objects and inversely proportional to the distance between them.
Thus, When the ball was pulled toward the center of gravity is the gravity pulls the ball towards the center of the earth.
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An atom will be neutral ONLY if
Answers
Answer:
They have the same number of charged protons and electrons, therefore balancing positive and negative charges. I hope this helps you.
Explanation:
A gardener finds that his potted plants do not grow well . He notices that the soil present in most of the flower pots is sticky and that there is a lot of water collected in flower pot too . What can he do to help the plants grow better?
Answers
1. Change the soil: The gardener should remove the sticky soil from the flower pots and replace it with fresh, well-draining soil. This will help the excess water drain away and prevent the soil from becoming waterlogged.
2. Provide proper drainage: The gardener should ensure that the flower pots have proper drainage holes to allow excess water to drain away. If the pots do not have drainage holes, he can drill some holes in the bottom.
3. Water the plants correctly: The gardener should water the plants only when the soil is dry to the touch. Overwatering can lead to waterlogged soil and root rot, which can kill the plant.
4. Provide adequate sunlight: The gardener should ensure that the plants are receiving adequate sunlight. Most plants need at least 6 hours of sunlight per day to grow properly.
5. Fertilize the plants: The gardener can fertilize the plants with a balanced fertilizer to provide the necessary nutrients for growth. He should follow the instructions on the fertilizer package and avoid over-fertilizing, which can damage the plants.
An aqueous solution containing 5.0g of solute in 100ml is extracted with three 25ml portion of diethy|ether. what is the total amount of solute that will be extracted by the ether,k=1.0
Answers
The total amount of the solute extracted by ether is 2.44g.
A two-phase liquid system is used to separate a substance from its contaminants using the solvent extraction or liquid-liquid extraction process. Here, an organic solvent makes up one phase while an aqueous solvent makes up the other. The chemical must have a sufficient variation in solubility between the two layers in order to proceed with the separation and ensure that the bulk of the molecule is present in just one layer. The total amount of solute extracted can be calculated as done below.
Using the equation below, we must first determine the percentage of the solute still present in the aqueous layer in order to determine how much of the solute was extracted.
\(q = (\frac{V_1}{V_1 + K V_2} )^n\)
where;
q is the percentage that is left (unknown)
\(V_1\) is the aqueous solution's volume (100 mL)
\(V_2\) is the volume of the solvent used for extraction (25 mL)
K is the ratio of the two solvents' partition coefficients (1.0)
n is the number of extractions (3)
q = \((\frac{100}{100 + 1.0 * 25} )^3\) = 0.512
The extracted fraction of solute will then be determined:
Fraction of solute extracted = 1.000 - 0.512 = 0.488
The extracted solute's mass will then be computed:
mass of solute extracted = 5.0 x 0.488 = 2.44 g
Therefore, the total amount of extracted solute is 2.44g
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What happens to the glucose molecule during the process of cellular respiration?
It gets broken down.
It forms oxygen.
It builds muscles.
It uses up energy.
Answers
Answer:
it's broken down into carbon dioxide and water
Explanation:
The answer is A. It gets broken down.
explain the statement, the standard electrode of zinc is -0.76 v
Answers
The standard electrode of zinc is -0.76 V means that the zinc electrode behaves as an anode.
The negative sign of the standard potential suggests that when the electrode is attached to the Standard Hydrogen electrode (SHE) it behaves as an anode. Oxidation takes places at anode. Standard electrode potential is the potential measured for the half cell against the Standard electrode at the standard conditions.
Therefore, the standard electrode of zinc is -0.76 V means that the Zinc electrode behaves as an anode and oxidation occur at this electrode.
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How many moles are in 7.9 grams of P 2 O 5?
Answers
Answer: 0.0556555468903552 moles, you can estimate that to its nearest hundreth, or thousandth.
Explanation:
im just naturally a genius
Why do surface waves break along the shore?
Answers
Answer:
because the global sea level rises while the poles temperature increases
Explanation:
how do two sublevels of the same principal energy level differ from each other?
Answers
Two sublevels of the same principal energy level differ from each other through shape and size.
There are mainly 4 energy level s, p, d and f.
The s level has one orbital and one orbital have two electrons. So the maximum number of electron in s sublevel is 2.
The p level has three orbital and one orbital have two electrons. So the maximum number of electron in s sublevel is 6.
The d level has five orbital and one orbital have two electrons. So the maximum number of electron in s sublevel is 10.
The f level has 7 orbital and one orbital have two electrons. So the maximum number of electron in s sublevel is 14.
They may be differ in magnetic level.
Thus, we concluded that Two sublevels of the same principal energy level differ from each other through shape and size.
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0. A radioactive isotope has a half-life of 273 days. How much of a sample of 100 grams of the isotope would remain after 732 days?
Answers
The amount of a sample of 100 grams of a radioactive isotope that would remain after 732 days would be 14.0625 grams.
Given, the Half-life of the radioactive isotope = 273 days.Time elapsed = 732 days.Initial quantity or sample = 100 grams. Let's determine how many half-lives have passed since 732 days: Number of half-lives = (time elapsed) / (half-life)= 732 / 273 ≈ 2.683
Half-life #1: After the first half-life of 273 days, the sample will be halved. Therefore, after 273 days, the quantity remaining will be 1/2 * 100g = 50g
Half-life #2: After the second half-life of 273 days, the sample will be halved again. Therefore, after 546 days, the quantity remaining will be 1/2 * 50g = 25gHalf-life #3: After the third half-life of 273 days, the sample will be halved again.
Therefore, after 819 days, the quantity remaining will be 1/2 * 25g = 12.5gHowever, the time elapsed from 819 days to 732 days is 87 days. This time interval is less than the half-life. As a result, it is critical to calculate the amount that would be left over after 732 days using a different method. Let us consider the remaining amount from 819 days (12.5g) as the new initial quantity for the remaining 87 days. The half-life of the radioactive isotope is 273 days.
Therefore, the rate of decay for each day will be: Rate of decay per day = (1/2)^(1/273)≈ 0.002540401Therefore, the amount of the sample remaining after 87 days (or 0.3195 half-lives) can be calculated using the following formula: Q = Q0(0.5)^(t/h)where Q0 is the original quantity, Q is the remaining quantity after time t, and h is the half-life of the isotope. Q = 12.5g × (0.5)^(0.3195)Q ≈ 6.5625g
Therefore, the total amount of the sample remaining after 732 days can be found by adding up the amounts of the sample remaining from each half-life: Total remaining = 50g + 25g + 6.5625gTotal remaining ≈ 81.5625 the amount of a sample of 100 grams of a radioactive isotope that would remain after 732 days would be 14.0625 grams.
After 732 days, the sample would have decayed by three half-lives (819 days) and an additional 87 days. As a result, 81.5625g of the sample will remain after 732 days. Therefore, 100g - 81.5625g = 18.4375g of the sample would have decayed in 732 days.
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when the concentrations of both mercury chloride and oxalate ion are 0.30 m, what is the rate of the reaction?
Answers
The concentrations of both mercury chloride and oxalate ion are 0.30 m, the rate of the reaction is 7.8 × 10⁻⁴ M/s.
given that :
concentration of mercury chloride = 0.30 M
concentration of oxalate ion = 0.30 M
It can be written as:
2HgCl₂ + C₂O₄²⁻ -----> 2Cl⁻ + Hg₂Cl₂ + 2CO₂
k = 8.7 × 10⁻³ M⁻²/s⁻¹
The rate of the reaction will be shown as :
Rate = k [HgCl₂ ] [ C₂O₄²⁻ ]²
Rate = 8.7 × 10⁻³ (0.30)(0.30)²
Rate = 7.8 × 10⁻⁴ M/s
Thus, rate of the reaction will be :
Rate = 7.8 × 10⁻⁴ M/s
This question is incomplete , the complete question is :
__""when the concentrations of both mercury chloride and oxalate ion are 0.30 m, what is the rate of the reaction? "__
the rate is given as : Rate = k[HgCl₂ ] [ C₂O₄²⁻ ]² value of k = 8.7 × 10⁻³ M⁻²/s⁻¹__"
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You're paid $25 per hour for your job. How much would you earn in cents per second?
Answers
Answer:
0.694 cents per second
Explanation:
25x100=2500 cents per hour, 2500/60 = 41.67 per minute and 41.67/60=0.694 cents per second
please help i’ll mark brainliest
Answers
Answer:
Physical change
Explanation:
Chemical change is defined as the process in which new substance with different properties is formed from old substance and the process is irreversible while physical change is a reversible process and changes only physical properties of a substance.
The given experiment is an example of physical change because it is just the physical act of dissolving. The metal disk is dissolving in sodium acetate and the process is exothermic and the process is reversible as well.
Hence, the correct answer is "physical change".
25. In the formula for a molecular compound, which atom generally comes first? You may went
to refer to a periodic table.
Answers
Answer:
For organic compounds, carbon and hydrogen are listed as the first elements in the molecular formula, and they are followed by the remaining elements in alphabetical order. For example, for butane, the molecular formula is C 4 H 10.
Explanation:
why water isn't an effective buffer
Answers
Because not enough acid or base is present in the amount of water produced when additional acid or base is introduced, water is not a good buffer.
Yet, in real-world applications, water is a very poor buffer because it cannot produce more H+ than OH- because both species develop from the same reactant at a 1:1 stoichiometric ratio. Remember, a buffer needs to be able to account for even slight pH variations. Water cannot achieve this by itself. In the following ways, water functions as a temperature buffer: Water has a large capacity for heat. It may take heat from its surroundings and release cooling effects in return. Hence, during extremely hot weather conditions, water has a cooling effect.Water functions well as a solvent, dissolving a wide variety of compounds due to its polarity and capacity to create hydrogen bonds.
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a 28.8 g sample of iron absorbs 201 j of heat, upon which the temperature of the sample increases from 24.1°c to 39.6°c. what is the specific heat of iron?
Answers
The specific heat of iron is 0.454 J/g°C.
The specific heat of a substance is a measure of how much heat energy is required to raise the temperature of a given amount of that substance by a certain amount. In this case, we need to find the specific heat of iron.
To do this, we can use the formula:
Q = mcΔT
where Q is the heat energy absorbed, m is the mass of the sample, c is the specific heat, and ΔT is the change in temperature.
From the question, we are given the mass of the sample (28.8 g), the heat energy absorbed (201 J), and the change in temperature (39.6°C - 24.1°C = 15.5°C).
Plugging these values into the formula, we get:
201 J = (28.8 g)(c)(15.5°C)
To solve for c, we need to isolate it. We can do this by dividing both sides of the equation by (28.8 g)(15.5°C):
c = 201 J / (28.8 g)(15.5°C)
Calculating this, we find that the specific heat of iron is approximately 0.454 J/g°C.
Therefore, the specific heat of iron is 0.454 J/g°C.
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which one is you fav one
Answers
Answer:
the 3rd one
Explanation:
At a certain temperature, 2.50 g Ca reacts completely in 30.0 seconds. The rate of consumption of Ca is
Answers
The rate of consumption of Ca is 0.0833 g/s.
The rate of consumption of Ca can be determined by dividing the mass of Ca consumed (2.50 g) by the time taken for the reaction to occur (30.0 seconds). This gives us a rate of 0.0833 g/s, indicating that 0.0833 grams of Ca are consumed every second during the reaction at the given temperature.
In chemical reactions, the rate of consumption or production of a substance is typically expressed in terms of the change in concentration over time. In this case, since the mass of Ca consumed is given, we can directly calculate the rate of consumption.
It's important to note that the rate of consumption of Ca may vary with temperature and other reaction conditions. The given rate applies specifically to the given temperature and the specific reaction conditions mentioned in the problem.
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For 2 hours, Leah was driving east at one-half of her car's top speed. Her car can go at a maximum speed of 180 kilometers per hour. In this time, how far did Leah drive?
Answers
Answer:
180 kilometers in 2 hours.
Explanation:
To find the distance Leah drove, we need to first determine her average speed. Since Leah was driving east at one-half of her car's top speed, her average speed was 180/2 = 90 kilometers per hour.
Next, we can use this speed to determine the distance she traveled. Since Leah was driving for 2 hours at an average speed of 90 kilometers per hour, she traveled 2 * 90 = 180 kilometers.
Therefore, Leah drove 180 kilometers in 2 hours while driving east at one-half of her car's top speed.
Identify the color absorbed by a solution that appears the color given.
Blue=
Red=
Orange=
Green=
Answers
Blue = orange/yellow light (wavelengths around 450-500 nm) is absorbed by the solution that appears blue.
Red = green light (wavelengths around 550-600 nm) is absorbed by the solution that appears red.
Orange = blue light (wavelengths around 450-500 nm) is absorbed by the solution that appears orange.
Green = red light (wavelengths around 650-700 nm) is absorbed by the solution that appears green.
Give a short note on absorption.
Color absorption takes place because substances selectively absorb certain wavelengths of visible light, while transmitting or reflecting others. The color that we perceive is the result of the wavelengths of light that are not absorbed, but rather transmitted or reflected, and detected by our eyes. This phenomenon is commonly used in colorimetric analysis and can provide important information about the electronic structure and composition of a substance.
Hence, the answer is,
Blue = orange/yellow light
Red = green light
Orange = blue light
Green = red light
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Read the two statements given below. Statement 1: All living matter at the smallest level is made of cells Statement 2: New animal cells are formed from pre-existing animals Which of the following best relates the statement to the correct type of theory?
PLS I NEED HELP
Answers
Answer:
Statement 1: All living matter at the smallest level is made of cells
Explamation:
All living things are made of cells; the cell itself is the smallest fundamental unit of structure and function in living organisms.
Hope this helps
Answer:
I would say A or C
Explanation: Because Statement 1 sounds like an everyday theory and my other question is Both because they sound the same but... I'm really confused about these Questions Hope I will find my answer
And Please mark me as brainliest
Which of the following reactions show the balanced reaction for the incomplete combustion of methane, CH4? CH4 + O₂ → CO + H₂O A. CH₂ + O₂ → CO + 2H₂O 2 B. 2CH₂ + 30→2CO + 4H₂O C. 2CH +20, → 3CO + 4H₂O D. CH+20₂ → CO + 2H₂O
Answers
The balanced chemical equation for incomplete combustion of methane,2 CH₄+ 3 O₂\(\rightarrow\) 2 CO + 4 H₂O.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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6. Within how many hours are fingerprints still considered "fresh"? *
16 hours
O 48 hours
O24 hours
O 8 hours
Answers
Answer:
actually it depends on when and on what you had the finger print it could stay a couple of days, weeks or months and still be considered fresh
if davis tap water has about 450 ppm of dissolved minerals, what would the measured tds be?
Answers
The TDS (Total Dissolved Solids) can be approximated by multiplying the ppm (parts per million) by a conversion factor of 0.5.
TDS = 450 ppm x 0.5 = 225 mg/L (or ppm)
what will happen if i add a substance that dissociates to provide many hydroxide ions, such as a strong base, into pure water? (select all that apply)
Answers
Water auto-ionization equilibrium shifts to the reactant side as [H3O+] falls and [OH-] grows.
Equilibrium in a process is a state in which the observable properties such as color, temperature, pressure, concentration, and so on do not change.
The word equilibrium means 'balance,' implying that a chemical reaction represents a balance between the reactants and products involved. The equilibrium state can also be observed in certain physical processes, such as the melting point of ice at 0°C, where both ice and water are present.
The equilibrium associated with physical processes, such as solid melting or salt dissolution in water, is known as physical equilibrium, whereas the equilibrium associated with chemical reactions is known as a chemical equilibrium. In a reversible reaction, the chemical equilibrium is the state in which both.
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The complete question is:
What will happen if I add a substance that dissociates to provide many hydroxide ions, such as a strong base, into pure water? (Select all that apply)
[H3O+] decreases
the equilibrium of water auto-ionization shifts to the reactant side
[OH-] increases
What are the coefficients that will balance the equation below?
NaOH + AICI:
NaCl + Al(OH)3
1, 1, 1,3
1, 3, 1,3
3, 1, 3, 1
1, 3, 3, 1
Answers
Answer:
3, 1, 3, 1 is a required answer.
Can someone please provide me a picture of raw egg (uncracked), spatula, and pan
Answers
Answer:
Aight bud :3
Explanation:
:3
Occurs in many complex organisms such as plants, animals and fungi
Answers
Answer:
DNA
Explanation:
The eukaryotic cell participates in the formation of complex organisms and contains a nucleus, cytoplasmic organelles, and a cytoskeleton.
In a eukaryotic cell, DNA is contained in a compartment called the nucleus, which is enclosed by a membrane.The answer should be DNA based on the wording of the question. Hopefully this helped a little bit.
What would a liquid at 50 degrees Celsius. I want to know it’s melting and boiling point.
Answers
A liquid at 50 degrees Celsius would have a melting point of 50 degrees Celsius and a boiling point of approximately 173.15 degrees Celsius.
What is the liquid?
iquid is a state of matter that has a definite volume, but does not have a fixed shape. It is one of the four fundamental states of matter, along with solid, gas, and plasma. Liquids tend to have a greater volume than solids, but geneLrally take the shape of their container. Examples of liquids include water, milk, blood, gasoline, and oil. Liquids are composed of molecules that tend to have greater mobility and can easily flow past each other. Depending on the temperature, pressure, and composition of the liquid, it can undergo changes in the state of matter.
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