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Allushta [10]
3 years ago
15

What color does cobalt-oxide produce? a. Blue-violet b. Red c. Yellow d. Green Please select the best answer from the choices pr

ovided A B C D.
Chemistry
1 answer:
Lena [83]3 years ago
4 0

Answer: Blue.

Explanation: Regardless of temperature, the metalic coloring oxide will produce a specific shade of blue.

You might be interested in
Write 10,847,100 in Scientific Notation with 4 significant figures.
Lisa [10]

Answer:

The number 10,847,100 in Scientific Notation is 1.0847x10^{7}

Explanation:

Scientific notation is an easy form to write long numbers and it is commonly used in the scientific field. To write a long number in a shorter way it is necessary to 'move' the decimal point to the left the number of positions that are necessary until you get a unit. Then you write the number and multiplied it by 10 raised to the number of positions you moved the decimal point. In this case, it is necessary to move the decimal point 7 positions so, we multiply the number by 10 raised to 7.

5 0
3 years ago
Which statement describes a property of covalent compounds?
Marat540 [252]

They have a low boiling point because of weak intermolecular forces. They

Explanation:

Covalent compounds are compounds that are known to have weak intermolecular forces and hence low boiling point.

Covalent bonds are bond formed between two or more atoms having zero or very small electronegativity difference. Such bonds exists between molecules of non-metals.

Here are some properties of covalent bonds;

  • They are gases or volatile liquids or low melting point solids
  • Most of them are insoluble in polar solvents or water but they are generally soluble in non-polar organic solvents.
  • They are mainly non-conductors.

learn more:

Covalent compound brainly.com/question/3109255

Covalent bond brainly.com/question/6029316

#learnwithBrainly

3 0
3 years ago
The __________ system is made of a series of glands that release chemicals directly into the bloodstream.
Nana76 [90]
The endocrine system is made of a series of glands that release chemicals directly into the bloodstream. 
7 0
3 years ago
What is the molarity of a solution of 17.0 g of nh4br in enough h2o to make 158 ml of solution? answer in units of m?
vivado [14]
Unit of M is also mole/L, where mole is the moles of solute and L is the volume of the solution.  The latter is given: 158 mL or 0.158 L.  So we need to find out the moles of NH4Br.

Moles of NH4Br = Mass of NH4Br/molar mass of NH4Br = 17.0g/(14+1*4+79.9)g/mol = 0.1736 mole.

So, the molarity of the solution = 0.1736mole/0.158L = 1.10 mole/L = 1.10 M
6 0
4 years ago
Which statement is true about energy changes?
Sindrei [870]

Answer:

D

Explanation:

energy can not be created or destroyed it can only be transferred or changed to one form to another.

7 0
4 years ago
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