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3 years ago

A mercury thermometer is used to take four temperatures of a solution

Chemistry

1 answer:

anastassius [24]3 years ago

7 0

Answer:

scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.

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Classify the following compounds as binary ionic, ternary ionic, or molecular.

Alborosie

Answer:bro u already have an answer why are you asking?

Explanation:

3 0

3 years ago

What form of energy does a compressed spring have? A) heat energy B) kinetic energy C) chemical energy D) potential energy

Akimi4 [234]

Answer:

D) Potential Energy

Explanation:

The compressed spring has elastic potential energy. If it is allowed to de-compress, the elastic potential energy will be converted to kinetic energy.

8 0

2 years ago

Read 2 more answers

Help! I need to finish work. Brainlist will be given to the most helpful!

Soloha48 [4]

Answer:

1. matches with elements.

2. matches with compounds.

3. matches with atoms

4. matches with weight

5. matches with gas

6. matches with carbon dioxide

7. matches with Mendeleev (there's an element named after him)

8. matches with IUPAC

Hope that helped :)

7 0

2 years ago

Calculate the number of Li atoms in 7.8 mol of Li.

Gwar [14]

<h3>Answer:</h3>

4.7 × 10²⁴ atoms Li

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

7.8 mol Li

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 7.8 \ mol \ Li(\frac{6.022 \cdot 10^{23} \ atoms \ Li}{1 \ mol \ Li})$
Multiply/Divide: $\displaystyle 4.69716 \cdot 10^{24} \ atoms \ Li$

<u>Step 4: Check</u>

<em>We are told to round to 2 sig figs. Follow sig fig rules and round.</em>

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

6 0

2 years ago

What happens to isotopes that are unstable?

Lesechka [4]

<u>Explanation:</u>

Isotopes are defined as the chemical species of the same element which differs in the number of neutrons. The isotopes which are unstable are known as radioactive isotope. A radioactive (unstable )isotope can undergo 3 decay process:

1. Alpha Decay: In this decay process, a larger nuclei decays into smaller nuclei by releasing alpha particle. The particle released has a charge of +2 and a mass of 4 units.

$_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha$

2. Beta-minus decay: In this decay process, a neutron gets converted into a proton and an electron. the particle released during this process is a beta-particle.

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

3. Beta-plus decay: In this decay process, a protons gets converted into a neutron and electron-neutrino particle. The particle released during this process is a positron particle.

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0\beta$

Isotopes which are unstable in nature can undergo these 3 decay processes.

5 0

2 years ago