Answer:
Yes, diamond can be burned. The most common form of burning in everyday life is carbon combustion. In carbon combustion, carbon atoms break their bonds with each other and with other atoms (which requires energy) to form bonds with oxygen atoms (which releases even more energy than first required). The net extra energy released in this reaction can then go on to rip more carbon atoms free of their non-oxygen neighbors, thus continuing the reaction, or the energy can escape as heat and ligh
Explanation:
Find the mass of 250mL of gatorade if the density of gatorade is 0.9g/mL.
Answer:
225g
Explanation:
250mL x 0.9g/mL = 225g
Answer:
225g
Explanation:
d=m/ml
m= d.ml
m=0,9g/ml.250ml
m=225g
What happens to light as it passes through a convex lens?
A.The light rays bend inward
B. The light scattered
C.The light magnified
D.The light bend outward
Answer:
the answer is D
Explanation:
Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.
In an oxoacid such as H2SO4, ionizable hydrogen atoms are those bonded to oxygen
a. True
b. False
Answer:
true
Explanation:
Oxoacids are oxygen containing acids .The ionizable hydrogens in sulphuric acid are those bonded to the oxygen atoms. Hence, the statement is correct.
What are oxoacids?According to Bronsted-Lowry concept acids are substances which can furnish H+ ions when dissolved in water or on ionization. Oxoacids contains oxygen along with hydrogen atoms.
Some elements have a number of oxoacids mainly for group 15 and 16 elements. Phosphorus and sulphur have 4-5 oxoacids which differ in the number of oxygen and hydrogens.Oxoacids contains the hydroxyl group OH and the naming of oxoacids is based on the number of OH groups.
Sulphuric acid is an oxoacid of Sulphur containing 2 OH groups and two double bonded oxygens. Where the hydrogen atoms can be donated to a base to form its ionizable form .
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TRUE or FALSE: recessive alleles of the same gene are named with a
DIFFERENT letter than dominant alleles.
match the vocabulary with the definitions.
1. a single compound breaks apart from two or more elements or compounds
2. two or more elements or compounds combine to form one compound.
3. a substance formed as a result of a chemical reaction.
4. one of the starting substances involved in a chemical reaction.
combination reaction
reactant
decomposition reaction
product
What is the name for a compound that forms between one Nitrogen and 3 Chlorines
in the picture below
8.5 g of rubidium are reacted completely with water.
The reaction makes a solution of rubidium hydroxide.
The volume of this solution is 2.5 dm'.
Calculate the concentration of the rubidium hydroxide solution in g dm
(relative atomic mass: Rb = 85; relative formula mass: RbOH = 102)
Answer:
0.040M RbOH
Explanation:
The reaction of Rb with water is:
2Rb + 2H₂O → 2RbOH + H₂
As 2 moles of rubidium produce 2 moles of rubidium hydroxide, we need to find the moles of rubidium added. With these moles and the volume we can find molar concentration of RbOH as follows:
Moles Rb = Moles RbOH -Molar mass Rb = 85.4678g)
8.5g * (1mol / 85.4678g) = 0.099 moles RbOH
As 1dm³ = 1L, the volume in liters is 2.5L
That means molarity is:
0.099 moles RbOH / 2.5L =
0.040M RbOHEnergy Resources Activity
Which of the following is a problem associated with the use of fossil fuels?
production of water
acid rain
nuclear waste
Answer:
acid rain is a problem associated with the use of fossil fuels
Water can break down to form hydrogen and oxygen gas. Balance the
equation below (hint, always balance oxygen last). What coefficients go in
the blank spaces? *
Answer:
its 2,2,1
Explanation:
ANSWER ASAP!!!!which state of matter consists of particles that cannot be compressed and form a definite shape
gas
liquid
plasma
solid
Draw the mechanism for the first step in the reaction of resorcinol with ethyl acetoacetate including all proper electron pushing arrows. Use the back of this page for space as needed.
Answer:
Attached below is the required diagram .
Explanation:
During the reaction of resorcinol and ethyl acetoacetate there is the production of a transesterification product, and this transesterification product is produced in other to increase the electrophicilty of the carbonyl center.
Attached below is the required diagram .
An inflated balloon is left
outside overnight.
Initially, it has a volume
of 1.74 L when the
temperature is 20.2°C and
the pressure is 1.02 atm.
At what temperature will
the balloon have a volume
of 1.56 L if the pressure
falls to 0.980 atm?
*Show all of your work*
Answer:
4.2 L
Explanation:
The final temperature of the system can be determined using combined gas law. The temperature at which the balloon has a volume of 1.56 L and pressure of 0.980 atm is 17.4 ° C.
What is combined gas law?Combined gas law is combination of Charles's law, Boyle's law and Gay-Lussac's law. It states the relation between temperature, pressure and volume of a gas .
Thus, P V/T = a constant
Let P1, V1 and T1 be the initial pressure,volume and temperature of the gas and P2, V2 and T2 be the final values, then
P1 V1/T1 = P2 V2 /T2
Given that, P1 = 1.02 atm
V1 = 1.74 l
T1 = 20.2° C
P2 = 0.98 atm
V2 = 1.56 L
T2 = (P2 V2 T1)/ (P1 V1)
= (0.98 × 1.56 × 20.2) /(1.74 × 1.02)
= 17.4 ° C
Therefore, the final temperature of the system will be 17.4 ° C.
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The more bonds an atom can make, the more likely it is to combine with other atoms in different ways.
Which element is most likely able to make the greatest variety of bonds?
O nitrogen
O hydrogen
O oxygen
O carbon
Answer:
carbon
Explanation:
for it has got an ideal size, neither too small nor too big
What is the molarity of a solution that contains 33.5 g of CaCl, in 600.0 mL of water.
0.503 M
O 0.0558 M
5.00 x 10-4 M
0.744 M
Q. 8. Which of the following statements about plastics are true?
(i) All plastics do not have the same arrangement of monomer units.
(ii) Melamine resists fire and can tolerate heat better than other plastics.
(iii) Plastics with cross-linked monomers are also known.
(iv) Plastics have limited applications.
a) (i) and (iii) only
b) (iii) and (iv) only
c) (i), (ii) and (iii) only.
d) (i), (iii) and (iv) only
Answer:
a) (I) and (iii) only
Explanation:
Because different plastics have different size.
A sample of liquid water at 30 c is heated until half of it boils away
Answer:
b. decreases
Explanation:
For the decomposition of dinitrogen pentoxide in carbon tetrachloride solution at 30 °C , the average rate of disappearance of N2O5 over the time period from t = 0 min to t = 112 min is found to be 5.80×10^-4 M min^-1. The average rate of formation of O2 over the same time period is:__________ M min-1
Answer:
1.45 × 10⁻³ M min⁻¹
Explanation:
Step 1: Write the balanced reaction for the decomposition of dinitrogen pentoxide
2 N₂O₅(g) ⇒ 2 N₂(g) + 5 O₂(g)
Step 2: Calculate the average rate of formation of oxygen
The average rate of disappearance of N₂O₅ over the time period from t = 0 min to t = 112 min is found to be 5.80 × 10⁻⁴ M min⁻¹ (5.80 × 10⁻⁴ molN₂O₅ L⁻¹ min⁻¹). Given that the molar ratio of N₂O₅ to O₂ is 2:5, the average rate of formation of O₂ is:
5.80 × 10⁻⁴ molN₂O₅ L⁻¹ min⁻¹ × 5 molO₂/ 2 molN₂O₅ = 1.45 × 10⁻³ molO₂ L⁻¹ min⁻¹ = 1.45 × 10⁻³ M min⁻¹
How much heat is released for 98g of steam to condense?
A. -221480 J
B. +32732J
C. 35980 J
D. -32732J
From a cross between a short-haired guinea pig (hh) and a long-haired guinea pig (Hh), what would be the possible phenotypes of the offspring?
A. 100% will have long hair.
OB. 75% will have long hair; 25% will have short hair.
OC. 50% will have long hair; 50% will have short hair.
O D. 25% will have long hair; 75% will have short hair.
Answer:
C
Explanation:
There will be a two long hair and two short hair
At maximum capacity, the MOXIE can produce up to 10.0g of breathable oxygen per hour. How many grams of CO2 must be harnessed by the device to make oxygen over a 2 hour period?
Give your answer with the correct number of sig figs
[balanced equation: 2CO2 (g)--> 2CO (g)+ O2(g)]
Answer:
55.0 g
Explanation:
Step 1: Write the balanced equation for the production of oxygen
2 CO₂(g)⇒ 2 CO(g) + O₂(g)
Step 2: Calculate the mass of oxygen produced over a 2 hour period
The MOXIE produces 10.0 g of oxygen per hour.
2 h × 10.0 g/1 h = 20.0 g
Step 3: Calculate the moles corresponding to 20.0 g of O₂
The molar mass of O₂ is 32.00 g/mol.
20.0 g × 1 mol/32.00 g = 0.625 mol
Step 4: Calculate the number of moles of CO₂ needed to produce 0.625 moles of O₂
The molar ratio of CO₂ to O₂ is 2:1. The moles of CO₂ needed are 2/1 × 0.625 mol = 1.25 mol
Step 5: Calculate the mass corresponding to 1.25 moles of CO₂
The molar mass of CO₂ is 44.01 g/mol.
1.25 mol × 44.01 g/mol = 55.0 g
How did life begin? Are we alone in the universe? What makes us human?
Answer:
This really depends on what you belive in honestly, as a christian i belive a supreme being created all but school says something happend with bacteria and evolution or something lol. If this was a serious question and you need an answer for school just search up the evolution theory
Explanation:
Given the electrochemical cell reaction:
Zn(s) + Ni2+ (aq) → Zn2+ (aq) + Ni(s)
Which species is the reducing agent?
Explanation:
Charge flow occurs in solution by ions carrying positive or negative charges. Oxidation always occurs at the Anode and Reduction always at the Cathode. Electron flow through the metal is from the anode to the cathode.
Explanation:
For a Galvanic - Voltaic Cell, electron flow is from the anode to the cathode. The following diagram gives reactions at electrodes and direction
Please hurry!
*URGENT* *URGENT*
Best answer gets Brainliest!!
Please answer the question ASAP
Please someone answer this question correctly
Consider the following container with particles of a substance within it:
Lucas likes this model to use in a report but decided to add more molecules shorten the arrows and have the particles closer together. What type of matter does Lucas actually want his graphic to portray?
A) plasma
B) gas
C) liquid
D) solid
Answer:
c. liquid
Explanation:
because the are not very close if the said very closely packed together it would have been a solid
100 POINTS
A wire is coiled around an iron core, and a current runs through it to create an electromagnet. How would you INCREASE the power of the electromagnet?
Question 3 options:
Increase the voltage of the power source to create a higher current
Open a switch so that the current stops.
Replace the iron core with copper.
Make the wire straighter, so it wraps around the core fewer times
Answer:
increase the voltage of the power source to create a higher current.
Explanation:
Using a battery with more voltage will also cause more current to pass through the wire which will increase the power of the electromagnet.
How many formula units (particles of AgNO3) are in 5.50 grams of AgNO3?
(picture for answer choices)
Answer:
No of molcules(N)= 1.98×10^22
Explanation:
m=5.5, Mm= 167, NA= 6.02×10^23
Moles(n)= m/M= N/NA
5.5/167 = N/6.02×10^23
SIMPLIFY
N=1.98×10^22molecules
Propane is used as a fuel for camp stoves. It undergoes combustion to form carbon dioxide and water.
C3H8 + 5 02- 3 CO2 + 4H2O
How many molecules of dihydrogen monoxide will be produced from 7.328 moles of propane?
How Do i get this answer with steps ?
Answer:
1.765x10²⁵ molecules
Explanation:
C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂OFirst we convert 7.328 moles of propane (C₃H₈) into moles of H₂O, using the stoichiometric coefficients of the balanced reaction:
7.328 mol C₃H₈ * [tex]\frac{4molH_2O}{1molC_3H_8}[/tex] = 29.312 mol H₂OThen we convert 29.312 moles of H₂O into molecules, using Avogadro's number:
29.312 mol * 6.023x10²³ molecules/mol = 1.765x10²⁵ moleculesWhat type of physical weathering is caused by the expansion of water?
Answer:
Its frost wedging
Explanation:
Mixed Practice:
For questions 6-9, you may not have to use your entire flow chart. Decide where to start and end using your flow chart.
4NH3 + 5O2 → 4NO + 6H2O
MM NH3 = 17.04 g/mol; MM O2 = 32 g/mol; MM NO = 30.01 g/mol; MM H2O = 18.02 g/mol
In the above reaction, how many moles of NO are formed if 824 g of NH3 react?
27.5 mol
3510 mol
48.4 mol
774 mol
Given
Mass of NO - 824 g
Molar mass of NO - 30.01g/mol
No of moles of NO = Given mass/Molar mass
No of moles of NO = 824/30.01= 27.45 mole
Hence 27.5 moles of NO are formed!
The spoon's broken appearance is caused by light waves that are
A
Reflected by the glass and then absorbed the water
B
Refracted by the water
С
Absorbed by the metal spoon
D
Reflected by the metal spoon and the water
Answer:
its b
Explanation:
A sample of argon gas has a volume of 698.7l. The temp is decreased to 24.8c and the volume also decreases to 499.1l. What was the original temp