Its relative density causes objects to float or sink.
If the density of the substance is greater than the substance it is in, it will sink.
If the density is less than the substance it is in it will float.

5 0

2 years ago

20 points - please helpp

Rzqust [24]

Answer:

FeSO₄ + 2NaOH → Fe(OH)₂ + Na₂SO₄

Explanation:

The equation for the reaction is:

FeSO₄ + 2NaOH → Fe(OH)₂ + Na₂SO₄

Dissociation of each compound

FeSO₄ → Fe²⁺ + SO₄⁻²

NaOH → Na⁺ + OH⁻

Fe(OH)₂ → Fe²⁺ + 2OH⁻

Na₂SO₄ → 2Na⁺ + SO₄⁻²

5 0

3 years ago

What is the daughter nucleus produced when 188 Hg Hg188 undergoes positron emission? Replace each question mark with the appropr

Alenkasestr [34]

Answer: The daughter nucleus produced when 188 Hg undergoes positron emission is gold.

Explanation:

Positron emission: It is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. This is also known as -decay. In this the mass number remains same.

General representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

The chemical equation for positron emission is represented as:

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0e$

$_{80}^{188}\textrm{Hg}\rightarrow _{79}^{188}\textrm{Au}+_{+1}^0e$

7 0

2 years ago