What is the limiting reactant if 4.0 g of Nh3 react with 8.0 g of oxygen?
Answers
Answer : The limiting reagent is .
Solution : Given,
Mass of = 4.0 g
Mass of = 8.0 g
Molar mass of = 17 g/mole
Molar mass of = 32 g/mole
First we have to calculate the moles of and
.
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 5 mole of react with 4 mole of
So, 0.25 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Hence, the limiting reagent is .
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Compare and contrast a chemical reaction and a nuclear reaction.
Bombarding sodium-23 with a proton produces nuclide X and a neutron. What is nuclide X?Answers: magnesium-24magnesium-23neon-23 sodium-24 none of the aboveThe isotope P has a half-life of 14.3 days. If a sample originally contained 1.00 g of P, how much was left after 43 days?Answers: 0.250 g0.125 g 0.750 g0.500 gIdentify X in the reaction below. U + C → Cf + XAnswers: 1 alpha particle 3 protons6 neutrons 6 electronsA .20 gram sample of C-14 was allowed to decay for 3 half-lives. What mass of the sample will remain? Carbon-14 has a half life of 5730 years. Answers: 0.025 0.050.1 0.01 0.05The isotope Cu has a half-life of 30 s. If a sample originally contained 48 mg of Cu, how much time passed before the amount fell to 3 mg?Answers: 120 s240s30 s 60 s(when I did my calculation for the question above, I got 60 seconds) What radionuclide decays to Fe-56 by beta emission?Answers: Fe Co Mn Co MnHow do I know wat it becomes. I put 57 Co 27 and it's wrong.The Cf to Cf conversion is accompanied by __________.Answers: an alpha emission a neutron capturean electron capture an electron releaseI would greatly appreciate your help...ASAP. Thank you.
Pls help me on question 30 I don't know how to do it
What is the salt produced when calcium hydroxide, Ca(OH)2, reacts with phosphoric acid, H3PO4, in a neutralization reaction?
Answers
Answer: The correct answer is Option B.
Explanation: The compound given to us is . To write the IUPAC name for this compound, we need to follow some rules:
1. First write the name of the cation with its oxidation state in roman numbers.
2. Then write the name of the anion which may be a polyatomic ion or a non-metal.
3. The anion is used with a suffix '-ide'. Example: For chlorine, the anion would be named as chloride, for sulfur, the anion would be sulfide.
For the given compound, 2 silver atoms are needed to neutralize the charge on 1 sulfur atom.
Hence, the oxidation number of silver atom is '1'. So, the IUPAC name for the compound will be silver (I) sulfide.
Therefore, the correct option is B.
The correct way of writing this would be silver(I) sulfide, but silver sulfide without the (I) is also OK because it isn't always writte, nor is it necessary to write the (I).
Answers
871.09 Kelvin - 273.15 = 597.94 degrees Celsius
Therefore, 871.09 Kelvin is approximately equal to 597.94 degrees Celsius when rounded to two decimal places.
The temperature of 871.09 Kelvin as stated in the question is approximately -101.06 degrees Celsius.This is obtained by the standard result.
Temperature is often measured in two main scales, Kelvin (K) and Celsius (°C). To convert from Kelvin to Celsius, you need to subtract 273.15 from the given temperature in Kelvin.
This adjustment accounts for the fact that 0 Kelvin (absolute zero) is the point at which all molecular motion theoretically stops, while 0 degrees Celsius is the freezing point of water.
In this case, for the temperature of 871.09 Kelvin, the conversion is as follows:
The temperature in Celsius = 871.09 K - 273.15 ≈ -101.06°C.
This means that a temperature of 871.09 Kelvin is approximately equivalent to -101.06 degrees Celsius. It's important to note that Kelvin is an absolute temperature scale, where 0 K represents absolute zero, while Celsius is a relative scale with 0°C corresponding to the freezing point of water at standard atmospheric pressure.
To know more about Temperature conversion,
Answers
It has three nonbonding electrons.
It has five valence electrons available for bonding.
It has five nonbonding electrons.
Answers
I hope this helps. Let me know in the comments if anything is unclear.
Answer:The answer is "It has five valence electrons available for bonding". An element's group number is equivalent to the number of valence electrons that it has. This means that since phosphorus is found on group number 5, it has 5 valence electrons that participate in bonding. It also means that it needs 3 more electrons to complete its valency.
Answers
Answer: Hydrogen
I hope this helps;)