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Bumek [7]
3 years ago
12

The nuclear symbol for uranium-235 should be written as

Chemistry
1 answer:
ser-zykov [4K]3 years ago
7 0

Answer:

²³⁵₉₂U

Explanation:

               ²³⁵₉₂U

The nuclear symbol of U- 235 should be written as;

   

235 is the mass number of uranium. The mass number is written as the superscript before the symbol of the element.

92 is the atomic number of uranium. It is written as the subscript before the symbol of the element.

 

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The equation shows the reaction between zinc metal and hydrochloric acid.
kodGreya [7K]

Answer: 10 grams of Hydrogen gas will be produced theoretically.

Explanation: The equation for the reaction between zinc metal and hydrochloric acid is:

Zn(s)+2HCl(aq.)\rightarrow ZnCl_2(aq.)+H_2(g)

As HCl is present in excess, therefore limiting reagent is Zinc metal as it limits the formation of product.

By stoichiometry,

1 mole of Zinc metal produces 1 mole of Hydrogen gas, therefore

\text{5 moles of Zinc metal will produce}=\frac{1}{1}\times 5=5\text{ moles of Hydrogen gas}

Amount of Hydrogen gas produced can be calculated by:

\text{Mass of gas produced}=\text{Moles}\times \text{Molar mass}

Molar mass of Hydrogen = 2 g/mol

Mass of hydrogen gas produced = (5 moles )× (2 g/mol)

Mass of hydrogen gas produced = 10 grams

3 0
4 years ago
Read 2 more answers
What is meant by the term compound? Provide an example
PIT_PIT [208]

Answer:

I hope it helps

Explanation:

  • <em>When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound. Compounds can be defined as substances consisting of 2 or more different types of elements in a fixed ratio of its atoms. When the elements combine, some individual property of the elements is lost and the newly formed compound has new properties.Chemical Formula: Compounds are represented by their chemical formula. A chemical formula is a symbolic representation of the proportions of atoms that constitute a particular chemical compound.The chemical formula of water is H2O which shows two atoms of hydrogen and one atom of oxygen have combined to form one molecule of H2O. The chemical formula for common salt is NaCl which shows one atom of sodium and one atom of chlorine combine to form one molecule of NaCl.</em>
6 0
4 years ago
What is Non science?
BARSIC [14]

Answer:

A non-science is an area of study that is not scientific, especially one that is not a natural science or a social science that is an object of scientific inquiry.

7 0
3 years ago
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Calculate the frequency of blue light of wavelength 4.5x10^2 nm
insens350 [35]
I did the math and i got 450 but i dont know if its right

7 0
4 years ago
If the temperature changes by 100 K, by how much does it change in degrees Celsius?
Bumek [7]

Taking into account the degrees Celsius and Kelvin, if the temperature changes by 100 K, by 100 degrees Celsius it change in degrees Celsius.

A degree Centigrade is a unit of temperature (the physical quantity that reveals the level of heat) whose symbol is °C.

On the other hand, the degree Kelvin, whose symbol is K, is the unit of temperature on the scale created by William Thomson Kelvin, in 1848, based on the degree Celsius, he established his zero point (0) at zero absolute (-273.15 ° C). The figure 0 K is equivalent to the theoretical point where gases have no volume. Absolute zero or 0 K is the point where molecules theoretically stop moving. It is the "perfect" cold.

Considering that zero on the Celsius or degrees centigrade (0 ° C) scale is defined as the equivalent of 273.15 K, the conversion from degrees ° C to K is carried out using the following expression:

T(K)= T(°C) + 273.15 K

In this case, if the temperature changes by 100 K, as it is a change in temperature, the numerical value in K units is the same in ° C units.

Then, the correct answer is option B. if the temperature changes by 100 K, by 100 degrees Celsius it change in degrees Celsius.

Learn more about degrees Celsius and Kelvin:

  • brainly.com/question/2800860?referrer=searchResults
4 0
3 years ago
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