CHEMISTRY HIGH SCHOOL

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

Answers

Answer 1
Answer:

Answer: _(92)^(238)\textrm{U}

Explanation:

Isotopes are atoms of same element which have same atomic number but different mass number.

General representation of an element is given as:   _Z^A\textrm{X}

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

General representation of an isotope of ursium with atomic number of 92 and mass umber of 238 and represented by the symbol U is:

_(92)^(238)\textrm{U}
Answer 2
Answer: Uranium with an atomic mass number of 238 indicates that it is highly unstable and radioactive. This is because its original number of neutrons is only 92, giving it 146 more neutrons than the usual. These isotopes are usually given symbols denoted by the element-"atomic mass". This means a symbol for this isotope is Uranium-238 or ^238U.

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Complete the balanced equation: Cu(NO3)2 + Na2CO3 > ?

Answers

I think its CuCO3+NaNO3 but idk if its right 

17. What standard reduction electrode has a half-cell potential of 0.00 V? Oxygen hydrogen
lithium
Fluorine

Answers

I believe Hydrogen is the standard reduction electrode that has a half-cell potential of 0.00 V. In electrochemical cell, an electric potential is created between two dissimilar metals. This potential is a measure of the energy per unit charge which is available from reduction or oxidation reactions to drive the reaction. 

Which term describes the materials magma is made of?A. Extrusive
B. Intrusive
C. Molten
D. Cooled

Answers

Answer:

molten hi i eat apples and bananas

Which compound is an electrolyte? 1. H2O 2. C2H6 3. H3PO4 4. CH3OH

Answers

An electrolyte is a substance that releases ions when it is dissolved in water. Electrolytes are divided into salts, ions and bases. In this case, the electrolyte is H₃PO₄ as it releases H+ ions and PO₄⁻³ ions when it is dissolved in water.

The electrolyte is H₃PO₄, this is because it releases H⁺ ions and PO₄⁻³ ions when it is dissolved in water

What is an electrolyte?

In chemistry, an electrolyte is a substance that has the capacity of conducting electric current by dissociating into positively and negatively charged ions, which migrate to the cathode and anode of an electric circuit, respectively.

  • Electrolyte releases ions when it is dissolved in water.

From the given information;

The electrolyte is H₃PO₄, this is because it releases H⁺ ions and PO₄⁻³ ions when it is dissolved in water.

Learn more about electrolytes here:

brainly.com/question/1708976

1a. Identify the chemical_____ comes from the breakdown of proteins.

Answers

is it amino acids???????

Why might calcium be important in the diet of many living
things?

Answers

Answer:

Calcium is a nutrient that all living organisms need, including humans. It is the most abundant mineral in the body, and it is vital for bone health. Humans need calcium to build and maintain strong bones, and 99% of the body’s calcium is in the bones and teeth.

Answer: Helps form bones and shells

Explanation:
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