Which statement describes heterogeneous mixtures?A. They are made up of two or more pure substances that are not chemically bonded together.
B. They appear uniform, like a pure substance.
C. They have fixed ratios between their components.
D. They are made up of two or more pure substances that can be separated only by chemical processes.
Answers
The right answer is the option A. They are made up of two or more pure substances that are not chemically bonded. A classicall expample ot heterogeneous mixtures are sugar and salt. Sugar is a pure substance, salt is also a pure substance, when you mixe them you form mixture where salt is still salt and sugar is still sugar, that is what "they are not chemically bonded" means. So you can separate them by physical media.
Related Questions
What statement is TRUE about the subatomic particles within an atom?aProtons and electrons have the same mass. bProtons have a positive charge and are found in the nucleus. cNeutrons are negative and are found outside the nucleus. dElectrons are negative and are found in the nucleus.
In polar coordinates, the origin is called the _____.
Which of the following is not a stressor that causes a change in equilibrium?a. change in pressure b. change in temperature c. change in particle size d. change in concentration
Dave runs 2000 m in 25 minutes what is the speed
Answers
Final answer:
The volume measurement 0.100 L consists of 3 significant digits, counting the non-zero digit and the zero after the decimal point.
Explanation:
In the volume measurement 0.100 L, there are 3 significant figures. Significant figures represent the precision of a measured value. In this case, the zeroes after the decimal point are 'leading zeroes' which are not counted as significant. The '1' is a non-zero digit, which is always significant. And the zero after '1' is a 'trailing zero' that comes after a decimal point, so it is also counted as significant. Therefore, the number of significant figures in 0.100 L is 3.
Learn more about Significant Figures here:
#SPJ11
wastes and CO2 pass to cells, O2 pass to blood
CO2 and O2 pass to cells, wastes pass to blood
food and O2 pass to cells, CO2 and wastes pass to blood
Answers
The blood the reaches the cells from the capillaries food and O2 pass to cells, CO2 and wastes pass to blood. The rest of the choices do not answer the question above.
Answer:
food and O2 pass to cells, CO2 and wastes pass to blood.
Explanation:
Answers
1.0m=1.0m
5.6cm=0.056m
2.1mm=0.0021m
Then, you just want to multiply the three together to get the total volume.
1.0X0.056X0.0021=0.0001176 or 0.00012, if your teacher wants you to use proper sig figs
Answer : The volume of of rectangle is,
Explanation : Given,
Length of rectangular solid = 1.0 m
Width of rectangular solid = 5.6 cm = 0.056 m
conversion used : (1 cm = 0.01 m)
Height of rectangular solid = 2.1 mm = 0.0021 m
conversion used : (1 mm = 0.001 m)
Formula for volume of rectangle :
where,
V = volume of rectangular solid
l = length of rectangular solid
b = width of rectangular solid
h = height of rectangular solid
Now put all the given values in the above formula, we get:
Therefore, the volume of of rectangle is,
Answers
(2) The proportion by mass of elements combined in potassium chlorate varies.
(3) Potassium chlorate is composed of four elements.
(4) Potassium chlorate is composed of five elements.
Answers
Answer : The correct option is, (1) The proportion by mass of elements combined in potassium chlorate is fixed.
Explanation :
The composition of any compound is studied on the basis of law of fixed proportion. This law stats that in a compound the elements are present in fixed proportion by their mass.
In the given options, the option (1) statement describes the composition of potassium chlorate.
While the other options (2), (3) and (4) statements does not describe the composition of potassium chlorate.
Hence, the correct option is (1).
Answers
The answer is solid.
Solid, physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms).
Among the other states of matter that is liquid, gas; solid is the one that is having strongest attractive forces between particles (molecules, ions, or atoms).