Answer: 1.86*10^-7M
Explanation:
Answer:
B. 1.86 x 10^-7 M
Explanation:
Which phrase correctly describes the molecular structure within a molecule?
Same molecular structure and same properties.
Molecular structure is three dimensional structure in which arrangement of atoms is placed.
The molecular structure of a compound determines the polarity and its reactivity.
The different states of matter solid, liquid and gas have different molecular structure and different properties from each other.
The molecular structure of a molecule will have same properties as of the entire molecule based on its state.
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Answer:
the location of atoms, groups, or ions relative to one another and the number, type, and location of covalent bonds
summer school is over, and I'm feeling self-destructive. Take all of my points and have a good night. 3/3
ayo thanks mate :0000000000000000000000
10. Calculate the percent, by weight, of carbon in 154 g of Ca4H803 (A) 46% (B) 31% (C) 72% (D) 27% (E) 55%
Answer:
The answers are below
Explanation:
A) 46% of 154 = 70.84
B) 31% of 154 = 47.74
C) 72% of 154 = 110.88
D) 27% of 154 = 41.58
E) 55% of 154 = 84.7
Al wonders if adding salt to water will affect how long it takes the water to
freeze. Al thinks that salt water will freeze more quickly than fresh water.
He decides to check his hypothesis by conducting an experiment. Al takes
two ice trays and fills one with distilled water and the other with distilled
water that has two tablespoons of salt added. He makes sure he puts
exactly the same amount of water in each ice tray. Al takes the trays and
puts them side by side in the freezer. Al checks the ice trays every 10
minutes to see if the water in each tray has begun to freeze. Al finds that
after 20 minutes the water in the ice tray without the salt has started to
form ice, while the ice tray with the salt water is still completely liquid.
Ku
The hypothesis is that salt water freezes faster than fresh water.
The dependent variable is time taken for ice to appear.
The independent variable is presence or absence of salt
The constants are the amount of water in each tray, freezing conditions and length of time of exposure to freezing condition.
The control group is the tray to which salt was not added
The experimental group is the tray to which salt was added
The presence of solutes in a solution causes the freezing point depression.
A solution is made up of a solute and a solvent. In the presence of a solute, the freezing point of a pure solvent is decreased. This is because freezing point is a colligative property.
Colligative properties depend on the amount of solute present.
Hence, the pure water freezes faster (ice begin to appear earlier) than the salt water.
The hypothesis put forward in this experiment was found to be invalid by the experiment.
For more about colligative properties, see
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Using your answers from part C, complete the chemical formula of each compound. If the number of ions is 1, leave that
number out of the formula.
Drag each number to the correct location. Numbers may be used more than once
Answer:
1;1, 2;1, 3;1, 1;2, 1;1, 3;2, 1;3, 2;3, 1;1.
I hope this will help.
Answer:
This is what the answer looks like
Explanation:
Which of the following pairs lists a substance that can neutralize HNO3 and the salt that would be produced from the reaction?
O BaOH2 and Ba(NO3)3
O KOH and K2NO3
O NH3 and NH4NO3
O NH4 and NHA(NO3)2
Answer:
NH3 and NH4NO3
Explanation:
I took the test and guessed this since I couldn't find it here, it turned out to be correct so I thought I'd share.
The substances that can react with HNO3 to neutralize it are NH3 and NH4NO3.
What is neutralization?The term neutralization has to do with the reaction between an acid and a base to yiled salt and water only.
The substances that can react with HNO3 must be basic substances hence the substances required are NH3 and NH4NO3.
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Can someone tell me the advantages and disadvantages of Ceramics? I need scientific, good and clear points! :)
Hydrogen bromide is found in volcanic gas. What is the chemical formula for
this compound?
Answer:
Hydrogen bromide, anhydrous appears as a colorless gas with a pungent irritating odor. Corrosive. Heavier than air. Prolonged exposure to fire or intense heat may result in the violent rupture and rocketing of the container. Long-term exposure to low concentrations or short-term exposure to high concentrations can result in adverse health effects from inhalation. Used to make other chemicals and as a catalyst in the manufacture of chemicals. Rate of onset: Immediate Persistence: Minutes to hours Odor threshold: 2 ppm Source/use/other hazard: Chemical manufacturing industry; very corrosive.
Explanation:
HBr
Question 2: thanks!!!
Which is more acidic among the following?
Answer:
C
Explanation:
If the temperature of a reversible reaction in dynamic equilibrium decreases, how will the equilibrium change?
A. It will shift towards the endothermic reaction.
B. It will not change.
C. It will shift towards the products.
D. It will shift towards the exothermic reaction.
Answer:
D. It will shift towards the exothermic reaction.
Explanation:
How does the useable atoms of elements attain stability? Illustrate your answer with two example.
Answer:
An element which does not have two or eight electrons in its valence shell is unstable. It get stability by losing, gaining or sharing electron to complete noble gas electronic configuration. ... Elements attain stability by completing duplet or octet.
Convert 48,987 minutes to years
using the method of dimensional analysis
Answer:
Explanation:
48000 minutes [ 1 hour / 60 min ] 1 day / 24 hours ] [365 days / year]
48000 * [ 1/(60 * 24 * 365)]
48000 * [1 / 525600]
There are 0.0930954years in 48000 minutes
balance this equation
Al2 O3 + HCL → Al Cl3 + H2O
Answer:
[tex]{ \sf{Al _{2} O _{3(s)} + 6HCl _{(aq)} → 2Al Cl _{3(aq)} + 3H _{2} O _{(l)} }}[/tex]
Answer:
I think you have to put a coefficient of 6 in front Hcl,and a 2 infront of AlCl3 then a 3 in front of H2O,so that you can have 2 Al on both sides,6 Hcl,6 Cl and 3 o.
Al2O3+6HCl--->2AlCl3+3H2O.
I hope this helps
12. State duplet and duplet rule. Explain in brief with examples .
Answer:
I HOPE THE ABOVE INFORMATION WILL HELP YOU A LOT.
Describe what happens to the particles when a substance:
1. Melts
2. Freezes
3. Boils
4. Condenses
A sealed gas syringe which can move freely contains 60 cm³ of air.Thd atmospheric pressure is 101 kPa.What is the pressure of the enclosed gas?
Which type of bonds can carbon atoms form with other carbon atoms? (1 point)
O double, triple, and quadruple bonds
O single and double bonds
O double and triple bonds
O single, double, and triple bonds
Answer:
single, double, and triple bonds
What is sound energy?
A. A wave transmitted by the vibration of particles bumping into each other.
B. Energy stored in the chemical bonds between atoms.
C. A wave of photons carry the energy.
D. Transfer of energy from waves to particles.
Answer:
A
Explanation:
Because of the vibration
Answer:
A
Explanation:
Because of the vibration
The unit of force newton is a derived unit.Why?
Answer:
Why is the unit of force called a derived unit? That's because the Newton is defined in terms of other units which are more fundamental. One Newton is the force required to accelerate a mass of one kilogramme at the rate of one metre per second squared.
HELP . Read the following graduated cylinder.
Use this media to help you complete the question.
22.0 mL
22 mL
23.0 mL
22.5 mL
The volume of the liquid from the graduated cylinder is 22.5 mL
The last option (22.5 mL) is the correct option
The question seems to be incomplete
The image that completes the question is shown in the attachment below.
From the image, we observe that the liquid meniscus is between the 20 mL and 25 mL marks. That means the volume will lie in this range.
NOTE: The meniscus of a liquid is the upward or downward curve seen at the top of a liquid in a container.
The type of curve shown in the image is a concave meniscus and the volume of the liquid is read from the bottom of the curve.
To read the value from the graduated cylinder, we will first determine the difference between two consecutive lines. Between the 20 mL and 25 mL mark (two thick lines), we have 5 spaces separated by thin lines.
The measure between two consecutive lines is the difference between two thick lines divided by number of spaces between them
∴ The measure between two consecutive lines = (25mL - 20mL) ÷ 5
The measure between two consecutive lines = 5mL ÷ 5 = 1 mL
Now, to read the position of the liquid,
Starting from the 20 mL mark, the liquid exceeds two more lines + half way to the next line ( that is 2mL + 0.5 mL)
∴ The position of the liquid is 20 mL + 2mL + 0.5 mL = 22.5 mL
Hence, the volume of the liquid from the graduated cylinder is 22.5 mL
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Answer:
The answer is 22.5 mL
Explanation:
I hope this helps you :)
How many times more acidic is pH2 than pH4?
Answer:
100 times more acidic.
Explanation:
If you look at the pH scale, pH2 is 2 "jumps" away from pH4, therefore, pH2 is 100x more acidic than pH4.
What type of Nuclear decay is shown by the reaction below
Answer:
bete is your answer.
have a great day.
I think c ....is write answers
(NEED HELP IMMEDIATELY) In a gene, which base sequence codes for two amino acids?
1. CTAA
2. AG
3. GAGCTC
4. GAA
Answer:
[tex]\boxed {\boxed {\sf 3. \ GAGCTC}}[/tex]
Explanation:
Amino acids are the monomers or building blocks of protein. Proteins are created during protein synthesis according to the genetic information or DNA in an organism.
The DNA is translated to messenger RNA in the nucleus. It travels to the ribosome. There, the mRNA is "read off" in threes. Three nucleotides make up a codon. Transfer RNA with the corresponding anticodon and an amino acid attaches to the codon and a chain of amino acid forms.
If 3 nucleotides make 1 codon which makes 1 amino acid, then we need double that or 6 nucleotides to make 2 amino acids.
The only answer choice with 6 nucleotides is Choice 3: GAGCTC
Which of the following is the BEST choice to contain small amounts of chemicals while they react?
electronic balance
test tube
coffee mug
graduated cylinder
Answer:
test tube
Explanation:
test tube is a very small thin glass in the science lab and it's contain small amount of chemicals as they react
Can someone help me Please?
Answer:
111. C . M2O3
112. A. 5
can you solve question 1 and 2.
I need it. :)
Answer:
The answer is below
Explanation:
1.
Tap water - Mixtures
Sodium - Compound
Nitrate - Compound
Rust - Compound
Distilled - Compound
Water - Compound
Paint - Mixture
Sugar - Compound
Carbon dioxide - Compound
Brine - Mixture
Apple Juice - Mixture
Petrol - Mixture
Ink - Mixture
Alcohol - Compound
____________________________________________
A) - Chromatography
B) - Fractional Distillation
C) Simple Distillation
D) Filtration
Q.1 Classify the following as mixture or compound :
MIXTURE :
Tap water Paint Brine Apple juice InkCOMPOUND :
Sodium nitrate Rust Distilled water Sugar Carbon dioxidePetrol AlcoholQ.2
Chromatography fractional distillationsimple distillation filtrationHOPE SO IT HELPS YOU
Mark me as brainliest
what is the purest form of iron
Is natural gas an explosive substance or flammable substance?
Answer:
Conditions to Avoid: Natural gas is extremely flammable and explosive; avoid heat, sparks, open flames, and all possible sources of ignition. Heat will increase pressure in containers used to store natural gas.Jun 1, 2015
Answer:
Natural Gas can be explosive or flammable depending on it's concentration in air.
Natural gas has a flammability range of approximately 5 to 15 percent.
Any percentage greater than that is explosive for natural gas.
Hope this helps.
How do I unscramble
kgiueneoseph
Answer:
d
Explanation:
Housekeeping is the answer :)
I hope this answer helps you out. Brainliest would be appreciated. Have a good day/night :).