Why does knowing the mass of an object not help you identify what material the object is made from?

1 answer:

4 0

Because mass is not always the same for objects made from the same material. Just because an object has the same mass as another doesn’t mean they are the same material.

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Which element is this.Its shiny,Is solid at room temperature, has atoms with two valence electrons?A:Lithium B:Strontium C:Alumi

tatyana61 [14]

Answer:

Stronium

Explanation:

It is a metal (and shows classic physical proerties). It also belongs to the second family, meaning it has two valence electrons.

4 0

2 years ago

1a. A researcher accidentally spilled some sand into his beaker containing crystalline compound X. Knowing what he did about mel

Sunny_sXe [5.5K]

Answer:

See explanation

Explanation:

Many organic compounds have low melting points. This is due to the fact that many of these compounds are non polar.

However, compound X is slightly polar but still has a melting point which is far less than that of sand composed of a high melting point inorganic material.

Since sand has a much higher melting point compared to compound X, the researcher need not be worried that sand was spilled into his beaker.

7 0

1 year ago

Atomic mass of nitrogen

erma4kov [3.2K]

Hello!! Your atomic mass will be found at the bottom of each element. The atomic mass of Nitrogen is 14.007. Have a great day!!

8 0

2 years ago

The highest energy level of sodium contains ________ electron(s).

Effectus [21]

Answer:

Explanation:

The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains

8 0

3 years ago

The solubility of magnesium phosphate at a given temperature is 0.173 g/L. Calculate the Ksp at this temperature. After you calc

jek_recluse [69]

Answer: $K_{sp}=1.25\times 10^{-14}$

$pK_{sp}=13.90$

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as $K_{sp}$

The equation for the ionization of magnesium phosphate is given as:

$Mg_3(PO_4)_2\rightarrow 3Mg^{2+}+2PO_4^{3-}$

When the solubility of $Mg_3(PO_4)_2$ is S moles/liter, then the solubility of $Mg^{2+}$ will be 3S moles\liter and solubility of $PO_4^{3-}$ will be 2S moles/liter.