Answer:
ρ = 1.08 g/cm³
Explanation:
Step 1: Given data
Mass of the substance (m): 21.112 g
Volume of the substance (V): 19.5 cm³
Step 2: Calculate the density of the substance
The density (ρ) of a substance is equal to its mass divided by its volume.
ρ = m / V
ρ = 21.112 g / 19.5 cm³
ρ = 1.08 g/cm³
The density of the substance is 1.08 g/cm³.
When using a graph, you plot data on on a grid with an x-axis and a y-axis.
Answer: graph
The balance equation for the reaction between sodium bicarbonate and hydrochloric acid:
The reactants and react in the ratio 1:1. So we use the mass of sodium bicarbonate and molar mass to find the number of moles produced.
.
.
Again we use the fact that the stochiometric ratio are 1:1:1:1:1, hence the moles of are 24.977moles.
So we used the ideal gas law , where P is the pressure, V is the volume, R the gas constant, is and T is the temperature in kelvins. We make V the subject
The answer is supposed to be in L, , so
Answer:
The answer is 2Fe(No3)3 + 3Na2CO3 -> Fe2(CO3)3 + 6NaNO3 .
Explanation:
Fe(lll) represents <em>I</em><em>r</em><em>o</em><em>n</em><em> </em><em>(</em><em>l</em><em>l</em><em>l</em><em>)</em><em> </em><em>i</em><em>o</em><em>n</em><em>s</em><em> </em><em>.</em>
NO3 represents<em> </em><em>N</em><em>i</em><em>t</em><em>r</em><em>a</em><em>t</em><em>e</em><em> </em><em>i</em><em>o</em><em>n</em><em>s</em><em> </em><em>.</em>
Na represents<em> </em><em>S</em><em>o</em><em>d</em><em>i</em><em>u</em><em>m</em><em> </em><em>i</em><em>o</em><em>n</em><em>s</em><em> </em><em>.</em>
CO3 represents<em> </em><em>C</em><em>a</em><em>r</em><em>b</em><em>o</em><em>n</em><em>a</em><em>t</em><em>e</em><em> </em><em>i</em><em>o</em><em>n</em><em>s</em><em>.</em>
Answer: 50%
Explanation: 50% or more of plant and animal species on Earth are found in tropical rainforests.