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3 years ago

What is an isototope?

Chemistry

2 answers:

Murljashka [212]3 years ago

5 0

I want to give u a easy definition of isotope.

<h2>Isotope of chemical element is an atom that has different number of neutrons than the standard for that element.</h2>

Hope this will help u.

If my ans was helpful u can follow me on brainly.

blsea [12.9K]3 years ago

4 0

Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

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A piece of an unknown substance weighing 124.0 grams is heated in boiling water to 100.0oc. when the substance is placed in a ca

MakcuM [25]

The heat cause 300g water temperature increase from 20 to 26 celcius. The heat transferred would be: 300g * (26 °C -20 °C) *4.2 joule/gram °C= 7560J

The unknown substance is added to the water, so its final temperature should be the same as the water. The calculation would be:

7560J= 124g * (100-26)* specific heat

specific heat= 7560J / 124g / 74 °C= 0.8238 J/gram °C

3 0

4 years ago

Which element has properties most similar to Bromine? A) F B) Kr C) S D) Se

Stells [14]

Fluorine (F) will have properties similar to Bromine (Br) because it belongs to the same group as Bromine.

7 0

4 years ago

Read 2 more answers

WILL MARK BRAINLIEST!!!!

Lyrx [107]

Answer:

5.702 mol K₂SO₄

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Compounds
Moles

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 993.6 g K₂SO₄

[Solve] moles K₂SO₄

Step 2: Identify Conversions

[PT] Molar Mass of K: 39.10 g/mol

[PT] Molar Mass of S: 32.07 g/mol

[PT] Molar mass of O: 16.00 g/mol

Molar Mass of K₂SO₄: 2(39.10) + 32.07 + 4(16.00) = 174.27 g/mol

Step 3: Convert

[DA] Set up: $\displaystyle 993.6 \ g \ K_2SO_4(\frac{1 \ mol \ K_2SO_4}{174.27 \ g \ K_2SO_4})$
[DA] Divide [Cancel out units]: $\displaystyle 5.7015 \ mol \ K_2SO_4$

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

5.7015 mol K₂SO₄ ≈ 5.702 mol K₂SO₄

7 0

3 years ago

Unlike carbohydrates and lipids proteins contain which element?

Harman [31]

Answer:

The answer to your question is: Nitrogen

Explanation:

Organic molecules that are part of living organisms are composed by

Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus and Sulphur.

The elements available in more quantity are Carbon, Hydrogen and Oxygen.

Nitrogen is present in proteins and nucleic acids.

4 0

3 years ago

One mole of copper has a different mass from one mole of mercury because

kari74 [83]

Answer:

an atom of mercury has a different mass than an atom of copper.

Explanation:

3 0

3 years ago