Wiki User
β 13y agoIt has a density of 200 g/mL
Wiki User
β 13y agoThe density of the object is calculated by dividing its mass by its volume. In this case, the density would be 4000g / 20ml = 200 g/ml.
It is 0.87 g/mL.
The density of the unknown metal is 7.9 g/mL. This is calculated by dividing the mass (158g) by the volume (20mL).
Density is Mass divided by Volume, [ ratio of mass to Volume, m/V ],so this object's density is 75/17= 4.4 g/mL
You cannot directly associate weight and volume. You firstly need to know the shape and other dimensions in order to find the volume. Then you need to apply the density of the material, i.e. what it weighs per volume.
The volume of the three coins is 33 ml. This can be calculated by subtracting the initial volume of water (20 ml) from the final volume of water (53 ml), which gives the volume occupied by the three coins.
density = mass / volume = 52 / 20 = 2.5 g cm-3 Note the units used. Density is commonly measured in grams per cubic centimeter. However using millilitres does not affect the answer since 1 ml = 1 cm3
It is 0.87 g/mL.
This well known formula should lead you on your path: Density (grams/ml) = mass/volume
The density of the unknown metal is 7.9 g/mL. This is calculated by dividing the mass (158g) by the volume (20mL).
The mass of 40 grams is 40 grams and the volume of 20mL is, wait for it, ... 20 mL!
Density is Mass divided by Volume, [ ratio of mass to Volume, m/V ],so this object's density is 75/17= 4.4 g/mL
You cannot directly associate weight and volume. You firstly need to know the shape and other dimensions in order to find the volume. Then you need to apply the density of the material, i.e. what it weighs per volume.
this is valid for water only (or any fluid with same density as water) water density (@0°C) = 1000 kg/m^3 (actual value is 999.8395 kg/m^3) = 1 g/ml volume = mass / density = (20 g) / (1 g/ml) = 20 ml
The volume of the object is the difference in water level before and after the object is added, which is 10 ml (30 ml - 20 ml). The density of the object is mass divided by volume, so 2g / 10 ml = 0.2 g/ml. Therefore, the density of the object is 0.2 g/ml.
The volume of the three coins is 33 ml. This can be calculated by subtracting the initial volume of water (20 ml) from the final volume of water (53 ml), which gives the volume occupied by the three coins.
In a 5mg/5mL solution, 20mL would contain 20mg of the active ingredient. To convert mg to cc, you need to know the density of the specific substance in question. This conversion cannot be accurately completed without the density information.
density = mass/volume. (g/cm^3)So here it is simple 24g/20ml = 1.2 g ml-1That's it. But check your units. g cm-3 is generally used in chemistry...and luckily cm-3 = ml-1. But if your volume is in litres or weight is in kgs, just be careful with your units.A fun side-note is that water is more or less 1g cm-3 in density. So 20ml of water = 20g. Here you have 24g, so you know 4grams of salt was added.This IS an approximation, though. There are many subtle effects you would consider in much higher education.-------------------------------------------------density is in g/ml or g/cc. And, the easiest way to do these problems is to just make the units match (with something that seems logical).You are given 20 ml & 24 g.So you simply divide the two.24g/20ml = 1.2 g/mlCheck your work... Does this make sense. You said it is a "salt solution" which we would expect a moderate increase in density over 1, so this seems plausible.