0
Only by evaporation of the solvent (water?)
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
If a few drops of HCl spilled over into the CaCO3 sample error in the reported percent CaCO3 will result from this poor laboratory technique?
Depending on the concentration, it could cancel out and make saltwater.
What happens when chlorine gas is passed over calcium hydroxide?
They will undergo an acid base reaction and the products would be calcium chloride, calcium chlorate and water.
Can calcium displace from magnesium?
As calcium is more reactive than magnesium calcium will displace the magnesium and will become calcium nitrate and is left over with magnesium on it's own
Why do farmers spray powdered calcium carbonate oxide or hydroxide over their fields?
To increase the pH value of the liquid phase in the soil; many crops grow better at higher pH values than are found in some soils.
When fluorine gas comes in contact with calcium metal at high temperaturessolid calcium fluoride is produced?
The statement of the question is true, unless the temperature is over 1423C, the melting point of solid calcium fluoride.
How does high hydroxide ion concentration do to a solution?
In this case the pH increase over 7.
Is an over-the-counter drug test as accurate as a laborator drug test?
No, a lab test can devoldge a percentage of concentration in a sample, and an over the counter only presents whether a substance is present or not. But they do that pretty well!!!
What does investegation mean in science?
You have to state whether or not your hypothesis was supported by the experiment and then explain why or why not. e.g. The hypothesis, if the concentration of the hydrochloric acid is increased, the change in weight of the calcium carbonate will increase, was supported by the experiment that was conducted. There was a notable difference in the change in weight of the calcium carbonate between the different concentrations. The data was reliable as the data was consistent over the three trials and it supported the hypothesis, which was backed by scientific explanation. Acids with a higher concentration contain more acidic particles. Because of this, the reaction was more likely to happen and happened over a larger amount of the surface area of the calcium carbonate. There were no anomalies in the data. As stated previously, the data was consistent over the three trials. Make sure you explain how reliable the data was and why or why not
Calcium deposit treatment over the eye?
calcium deposit over eye
If a few drops of HCl spilled over into the CaCO3 sample error in the reported percent CaCO3 will result from this poor laboratory technique?
Depending on the concentration, it could cancel out and make saltwater.
What has the highest concentration of hydroxide ion?
The highest pH on the scale is 14. But pH over 14 is also possible: for example a sample of 1o M sodium hydroxide solution has a pH of 15.
What causes stalactites to form?
This is caused by the concentration of minerals solidifying over time, normally from groundwater trickling through cracks in the roofs of such caverns contains dissolved calcium bicarbonate. When a drop of water comes in contact with the air of the cavern, some of the calcium bicarbonate is transformed into calcium carbonate, which is precipitated out of the water solution and forms a ring of calcite on the roof of the cavern.
how to decrease margin of error in probability sampling?
With probability sampling you have no control over the units that are sampled. So the only way to reduce the margin of error is to increase the size of the sample.
Does a Quota Sample represent the whole population?
yes because the quota sample include the random sample and when we have over estimation we will use the quota sample
Why is a sample usually preferred over a census?
Less time and less cost for a sample.
What function do calcium ions perform during skeletal muscle contractions?
During skeletal muscle contraction calcium ions expose myosin binding sites on to the actin. When a nerve sends a signal to a muscle to do some "action" the release of acetylcholine at the neuromuscular junction triggers calcium to be released into the cytoplasm. At rest, the cell has a low concentration of calcium. When the calcium concentration rises, calcium diffuses over to the muscle protein fibers and causes a conformational change. Calcium binds to the troponin and causes it to rotate slightly which forms a crossbridge that drags along the actin fiber and shortens it thus creating muscle fiber contraction.
What does squeezing the skin puncture site do to the specimen?
Squeezing the skin puncture site can invalidate the specimen. Vigorous squeezing may increase the proportion of the liquid part of the sample over the solid part, for instance.
