1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tems11 [23]
3 years ago
9

How can you test a mineral for hardness? I NEED~ THIS NOW PLEASE

Chemistry
1 answer:
creativ13 [48]3 years ago
8 0
Courtney’s in minerals can vary due to impurities but is usually diagnostic we determine the relative hardness of minerals using a scale diversity bye mineralogists Freidrich Mohs The scale assigned hardness Tuten common index minerals and is based up on the ability of one mineral to scratch another
You might be interested in
Write down the reaction of sodium hydioxide with<br>hydrochloric acid in words and symbols.​
ZanzabumX [31]
Hello!

the reaction:
sodium hydroxide + hydrochloric acid = sodium chloride

NaOH + HCl -> NaCl + H2O

if this helps, click “thanks” :)

- emily
5 0
3 years ago
What type of covalent bond is formed between amino acid molecules during protein synthesis? peptide bond electrovalent bond hydr
Brums [2.3K]

The type of covalent bond is formed between amino acid molecules during protein synthesis will be  <u>"peptide bond".</u>

<u />

A peptide bond would be a sort of covalent link that connects an amino acid's carboxyl group to its amino group. Amino acids itself were comprised of atoms bonded together through covalent bonds.

Two atoms share an electron pair equally in a covalent link. Peptide (amide) but also disulfide links between amino acids, as well as C-C, C-O, and C-N bonds within amino acids, represent examples of significant covalent bonds.

Therefore, the type of covalent bond is formed between amino acid molecules during protein synthesis will be  <u>"</u><u>peptide bond"</u><u>.</u>

<u />

To know more about covalent bond

brainly.com/question/4463646

#SPJ4

<u />

8 0
1 year ago
For the reaction shown, calculate how many grams of oxygen form when each quantity of reactant completely reacts.
Nikolay [14]

Explanation:

Molar mass of KClO_{3} = 39.1 + 35.5 + 3(16.0) = 122.6 g

Molar mass of KCl = 39.1 + 35.5 = 74.6 g

Molar mass of O_{2} = 32.0 g

According to the equation, 2 moles of KClO_{3} reacts to give 3 moles of oxygen.

Therefore, 2 (122.6) = 245.2 g of KClO_{3} will give 3 (32.0) = 96.0 g of oxygen. Thus, 245.2 g of KClO_{3} gives 96.0 g of oxygen.

(a) Calculate the amount of oxygen given by 2.72 g of KClO_{3} as follows.

       \frac {96g}{245.2g} \times 2.72 g = 1.06 g of O_{2}


(b) Calculate the amount of oxygen given by 0.361 g of KClO_{3} as follows.

    \frac {96g}{245.2g} \times 0.361 g = 0.141 g of O_{2}


c) Calculate the amount of oxygen given by 83.6 kg KClO_{3} as follows.  

    \frac {96g}{245.2g} \times 83.6 g = 32.731 kg of O_{2}

Convert kg into grams as follows.

    \frac{32.731 kg}{1 kg} \times 1000 g = 32731 g of O_{2}


(d) Calculate the amount of oxygen given by 22.5 mg of KClO_{3} as follows.  

    \frac {96g}{245.2g} \times 22.5 mg = 8.79 mg

Convert mg into grams as follows.

  \frac{8.79 mg}{1 mg}\times 10^{-3} g = 8.79 \times 10^{-3} g of O_{2}

8 0
3 years ago
The table shows the charge on three unknown subatomic particles.
brilliants [131]

Answer:

B. only particle Z

Explanation:

In the case of subatomic particles, those positive and neutral are located in the nucleus, and those with a negative charge on the outside.

8 0
3 years ago
Read 2 more answers
Phosphorus trichloride gas and chlorine gas react to form phosphorus pentachloride gas: pcl3(g+cl2(g?pcl5(g. a 7.5-l gas vessel
Natasha2012 [34]
25655+6565++65+65+65+56+566+56+556+5+656+56+56+56+56+
6 0
3 years ago
Other questions:
  • A generic gas, x, is placed in a sealed glass jar and decomposes to form gaseous y and solid z. 2x(g)↽−−⇀y(g)+z(s) how are these
    6·2 answers
  • Which of the following is a difference between plant cells and animal cells? A. In plant cells, DNA is stored in the mitochondri
    8·2 answers
  • What compound is Rb2CrO4
    7·1 answer
  • Ammonium perchlorate is the solid rocket fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen gas , ch
    8·1 answer
  • What is a solution
    13·1 answer
  • A mass spectrometer has determined the mass and abundances of all isotopes of an unknown element. The first isotope has a mass o
    5·1 answer
  • Which statement is false?
    15·1 answer
  • Among the groups of elements listed below, which have the same number of electrons in their outermost energy levels? C, K, Ca, R
    14·2 answers
  • How are phase changes related to kinetic energy? Justify your response in TWO OR MORE COMPLETE SENTENCES.
    14·2 answers
  • *CHEMISTRY*
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!