Answer:
2. They are held closed by the chordae tendineae to prevent blood from flowing back into the right atrium.
Offspring!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
By multiplying the rate constant by the substrate concentration (amount) or by determining reaction velocity (V).
Answer: True
Explanation:
Integrated pest management requires an expert knowledge of the pests, training and time. Some farmers may not have the resources to devote to this approach and may rely instead on the conventional spraying.
The integrated pest management is a great way which can be used to reduce the cost of the pesticides for a longer term and it also reduces the cost which will be required in future generations for pesticides.
It does not works every time as people do have that much patience and they switch to conventional spraying of pesticides on the crops.
Considering the definition of density, you obtain that:
- Part A: the density of gold is 19.3 g/cm³.
- Part B: the density of iron is 7.8 g/cm³.
<h3>Definition of density</h3>
Density is defined as the property that allows to measure the amount of mass in a certain volume of a substance.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
density= mass÷ volume
It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
<h3>Density in this case</h3>
In this case, you know that:
- A sample of gold has mass of 38.6 grams and a volume of 2 cm³.
- A sample of iron has a mass of 46.8 grams and a volume of 6 cm³.
Replacing in the definition of density:
- Gold: density= 38.6 g÷ 2 cm³
- Iron: density= 46.8 g÷ 6 cm³
Solving:
- <u><em>Gold: density= 19.3 g/cm³</em></u>
- <u><em>Iron: density= 7.8 g/cm³</em></u>
In summary, the density of gold is 19.3 g/cm³ and the density of iron is 7.8 g/cm³.
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