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maybe 20 but im trying to answer this question myself!
It depends on the radius(r) and length(L). Test tubes consist of a cylindrical section and a spherical portion. Assuming the spherical portion is a perfect hemisphere, the cylindrical portion is L-r, and the volume for that is (L-r)(r^2)pi. the hemispherical portion is (2/3)pi(r^3).
So for a 1.6X12.5cm test tube its volume is (12.5-.8)(.8^2)(3.14)+(2/3)(3.14)(.8^3)=25mL.
What else can I help you with?
What is the source of error when using a test tube?
A test tube (or sample tube) has no errors.
What can a test tube be held upright with?
A test tube can be held upright using a test tube rack, a test tube holder, or a clamp attached to a stand. These tools provide stability and prevent the test tube from tipping over during experiments.
Another name of germ tube test?
The alternative name for the germ tube test is "Reynold's test."
What is the name for the thing that holds a test-tube over a Bunsen burner?
A test-tube holder, also known as test-tube clamp or test-tube rack, is used to hold a test tube over a Bunsen burner during heating. It is designed to ensure safe handling and prevent accidents while working with test tubes and heat sources.
What is in the test tube when you do the pop test?
Hydrogen
What tube is used for sgpt test?
SGPT 84460 Green 1ml plasma U/L
How you do widal test?
Widal test is done by qualitative method or quantitative method. Quantitative method:-Take a set of 8dry clean test tubes. Place 1.9ml saline in tube no.1 and 1ml saline in rest of tubes. Add 0.1ml serum in 1st tube mix well it is dilution of 1:20 Transfer 1ml diluted serum from tube no.1 to tube no. 2 and so on. Through tube no.7 discard 1ml of fluid after mixing. leave 1ml saline in tube no.8. Add one drop of appropriate antigen(use only that antigen suspension which has given a positive reaction in screening test. Mix well and incubate overnight at 37.c Examine for agglutination. Interpretation:- Only a titre above 1:80 should be considered as significant A rising titre (done each week)is considered to be definite evidence of infection.
What you must do to inspect the drink tube assembly?
perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test
What is used for holding a test tube in place when the tube is hot or should not be touched?
A test tube holder, also known as test tube clamp or test tube rack, is used to hold a test tube in place when the tube is hot or should not be touched. It allows safe handling of test tubes during heating or when conducting chemical reactions.
What is the source of error when using a test tube?
A test tube (or sample tube) has no errors.
What is a test tube clamp used for?
Clamping a test tube
What is test tube stand used for?
to hold the test tube
What is used to grip test tube?
Test tube holder
What is Hard test tube?
a hard glass test tube is a test tube made out of glass that is almost impossible to break.
What can a test tube be held upright with?
A test tube can be held upright using a test tube rack, a test tube holder, or a clamp attached to a stand. These tools provide stability and prevent the test tube from tipping over during experiments.
Can you place a hot test tube in a test tube rack?
It is not recommended to place a hot test tube directly into a test tube rack as this can cause damage to both the test tube and the rack. It is advised to allow the test tube to cool down before placing it in the rack to prevent any accidents or mishaps.
What is another name for a test tube?
another name for test tube is culture tube or sample tube
