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LekaFEV [45]
2 years ago
7

Which of the following is most likely to yield the fossils that help scientists reconstruct the Earth's biological history?

Chemistry
2 answers:
Orlov [11]2 years ago
5 0
A. Sedimentary rock. This is because sedimentary rock contains sediments and sometimes some fossils.
NARA [144]2 years ago
4 0
 The answer is: A. Sedimentary Rock
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Which of the following statements correctly characterizes the subatomic particle
vichka [17]

Answer:

Its mass is about the same as that of a proton

Explanation:

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2 years ago
Consider this reaction: NH + + HPO 4 + NH3 + H2PO4
Serggg [28]

Answer:NH3

Explanation:Ecd

5 0
3 years ago
Atrial natriuretic peptide is a hormone that controls blood pressure in part by increasing the urinary excretion of sodium. True
mariarad [96]

Answer:

The answer is "true"

Explanation:

ANP, or ANF, is a human peptide hormone, that controls your blood pressure, a cardiac atrium secretion hormone. It response primarily to the volume and stress expansion of the auricles and ventricles.

  • ANP's main function decreases the amount of increased extracellular fluid by increasing renal excretion.
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4 0
3 years ago
What volume of methanol should be used to make 1.25 l of a 21.0 by volume solution
Nimfa-mama [501]
Answer:
262.5 mL

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6 0
2 years ago
Find the mass in grams of 2.00x10^23 molecules of F2
earnstyle [38]
Hello!

To find the mass in grams of 2.00 * 10²³ molecules of F₂ you'll need to apply the Avogadro's number, which tells the number of molecules in a mol of a substance, and the Molar Mass, which tells the weight of a mole of a substance. These two quantities are used in the following conversion factor:

2,00*10^{23} moleculesF_2* \frac{1 mol F_2}{6,02*10^{23} moleculesF_2 }* \frac{37,997 g F_2}{1 mol F_2} \\  \\ =12,51 g F_2

So, the mass of 2.00 * 10²³ molecules of F₂ is 12,51 g

Have a nice day!
4 0
3 years ago
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