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torisob [31]
3 years ago
15

Help!

Chemistry
2 answers:
Tasya [4]3 years ago
4 0
<h2>Answer:</h2>

The elements that can form basic compounds are;

  • Rubidium
  • Arsenic
  • Silicon
  • Antimony

Rubidium, Arsenic, Silicon, Antimony are the substances that can for the basic compounds. I think sulfur also play its role somehow in formation of basic compounds.

Temka [501]3 years ago
4 0

Answer:  The correct answer is :  Rubidium, arsenic, silicon and antimony

Explanation:  The basic compounds are formed by a metal and oxygen and are called basic oxides. Rubidium, arsenic, silicon and antimony are metals, so they are able to form basic compounds. The other elements are nonmetals like the case of xenon which is a gas.

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a sample of copper wire with a mass of 1.659 g is heated with excess powdered sulfur until the copper has combined with the sulf
CaHeK987 [17]
First you figure out how many grams of sulfur has been used.
2.080g - 1.659g = 0.421g of S used
Now change all of your grams to mols.
1.659g of Cu / 63.546g/mol = 0.02611mol of Cu
0.421g of S / 32.065g/mol = 0.01313 mol of S
From this you can see that S has less so we divide both numbers by the number of moles of S so we can get a ratio of S to Cu.
0.01313/0.01313 = 1 for S
0.02611/0.01313 = 2 for Cu
So the empirical formula would be Cu2S or copper sulfide.


4 0
2 years ago
The density of a certain type of steel is 8.1 g/cm3. What is the mass of a 124 cm3 chunk of this steel? Show
posledela

Mass of the steel is 1004.4 g

  • density of a substance can be regarded as the ratio of the mass of that substance to that of it's volume.

  • Mass of substance can be regarded as the quantitative measure of inertia, it can be simply explained as a fundamental property of all matter

<em> We can express this mathematically as ;</em>

  • Density=  \frac{ mass  }{volume  }

Given :

Density of this steel= 8.1g/cm3

Mass=  124 cm^{3}

If we make Mass subject of formula,

Mass= ( density *volume)

Then let us substitute the values into the expression

Mass= (124*8.1)

= 1004.4 g

Therefore, mass of the steel is 1004.4 g

Learn more at: brainly.com/question/9196460?referrer=searchResults

8 0
3 years ago
Which of the following is a compound machine?
il63 [147K]
Compound= many parts together therefore bike is the answer
6 0
3 years ago
Read 2 more answers
How many decigrams are in 4.6 decagrams?
11111nata11111 [884]

Answer:

\large \boxed{\text{460 dg}}

Explanation:

1. Convert decagrams to grams

\text{Mass} =  \text{4.6 dag} \times\dfrac{\text{10 g}}{\text{1 dag}} = \text{46 g}

2. Convert grams to decigrams

\\text{Mass} =  \text{46 g} \times\dfrac{\text{10 g}}{\text{1 dg}} = \text{460 dg}\\\\\large \boxed{\textbf{4.6 dag = 460 dg}}

3 0
3 years ago
Read 2 more answers
1. What are water storage containers called?
sukhopar [10]

Answer:

A Hydro-pneumatic tank is typically a horizontal pressurized storage tank. Pressurizing this reservoir of water creates a surge free delivery of stored water into the distribution system. Glass-reinforced plastic (GRP) tanks/vessels are used to store liquids underground.

HOPE THIS HELPED!!!!!!!!!!!XDDDDDDD

4 0
3 years ago
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