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USPshnik [31]
3 years ago
12

Geologists discover what seems to be a new, powdery substance, deep underground. When they analyze it it's found to contain, amo

ngst other things, potassium and iodine.
Which of the following are ruled out about this substance?

A. It is a mixture

B. It is a compound

C. It has a lattice structure

D. It is made up of molecules

E. It is an element
Chemistry
2 answers:
nikdorinn [45]3 years ago
8 0
The answer to your question is I think B
german3 years ago
5 0

Answer:

Explanation b:

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Carbon dioxide can be formed from the reaction of carbon monoxide and oxygen. How many moles of carbon monoxide must be reacted
dybincka [34]

Answer:

you know answer?

Explanation:

5 0
3 years ago
When ammonia is mixed with hydrogen chloride (HCl), the white solid ammonium chloride (NH4Cl) is produced. Suppose 10.0 g ammoni
Alex_Xolod [135]

Answer:

There will remain 5.33 grams of NH3 and there will be produced 14.66 grams NH4Cl

Explanation:

Step 1: Data given

Mass of ammonia = 10.0 grams

Mass of hydrogen chloride = 10.0 grams

Molar mass of ammonia = 17.03 g/mol

Molar mass of hydrogen chloride = 36.46 g/mol

Step 2: the balanced equation

NH3 + HCl → NH4Cl

Step 3: Calculate moles NH3

Moles NH3 = mass NH3 / molar mass NH3

Moles NH3 = 10.0 grams / 17.03 g/mol

Moles NH3 = 0.587 moles

Step 4: Calculate moles HCl

Moles HCl = 10.0 grams / 36.46 g/mol

Moles HCl = 0.274 moles

Step 5: Calculate limiting reactant

For 1 mol NH3 we need 1 mol HCl to produce 1 mol NH4Cl

HCl is the limiting reactant. It will completely be consumed. (0.274 moles)

NH3 is in excess. There will remain 0.587 - 0.274 = 0.313 moles

This is: 0.313 moles * 17.03 = 5.33 grams

Step 6: Calculate moles NH4Cl

For 1 mol NH3 we need 1 mol HCl to produce 1 mol NH4Cl

For 0.274 moles HCl we need 0.274 moles NH4Cl

Step 7: Calculate mass of NH4Cl

Mass NH4Cl = moles NH4Cl * molar mass NH4Cl

Mass NH4Cl = 0.274 moles * 53.49 g/mol

Mass NH4Cl = 14.66 grams

There will remain 5.33 grams of NH3 and there will be produced 14.66 grams NH4Cl

4 0
4 years ago
Two waves were analyzed with some high-tech instrumentation. The first wave was found to have a wavelength of 3 x 10 m and the s
a_sh-v [17]

Explanation:

The first wave was found to have a wavelength of 3 x 10⁵ m and the second wave had a wavelength of 3 x 10⁴ m

We need to find which wave have a higher frequency.

The relation between frequency and wavelength is given by :

c=f\lambda

Let f₁ and f₂ be the frequency of wave 1 and wave 2.

f_1=\dfrac{c}{\lambda_1}\\\\f_1=\dfrac{3\times 10^8}{3\times 10^5}\\\\=1000\ Hz

And

f_2=\dfrac{c}{\lambda_2}\\\\f_2=\dfrac{3\times 10^8}{3\times 10^4}\\\\=10000\ Hz

Hence, the wave having less wavelength will have higher frequency. The wave having wavelength 3 x 10⁴ m will have higher frequency.

8 0
3 years ago
A1(NO3)3 name, formula for cation an formula for anion
Nostrana [21]

Answer:

Explanation:

The name of the compound is:

       Al(NO₃)₃ is Aluminium nitrate

Aluminium nitrate is an ionic compound formed when Al loses 3 valence electrons to the nitrate.

Formula of cation: A cation is a positive charged specie

              Al³⁺

 Formula of anion: Anion is a negatively charged specie;

             NO₃⁻

7 0
3 years ago
Name one object that would be considered a solid. Describe how the atoms move in a solid object.
Roman55 [17]

Objects considered a solid:

Pencil

Water bottle

Phone

Table

Plant

Atoms are very attracted to one another in solid objects. They vibrate, but remain in fixed positions without moving.

7 0
3 years ago
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