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Phantasy [73]
4 years ago
12

What term is applied to a scientist who studies ancient life, including animal and plant fossils

Chemistry
2 answers:
seraphim [82]4 years ago
7 0

Answer:

A. Anthropologist

Explanation:

Anthropologist -

The person who practice in the field of anthropology , is referred to as an anthropologist .

Anthropologist involves the study of all the aspects of the human being , animals and plants ,  in the past and in the present .

Hence , the correct option to the given statement is A. Anthropologist.

navik [9.2K]4 years ago
5 0

Anthropologist is an individual involved in the study of different aspects of human life i.e. cultural, philosophical etc that were part of the ancient and modern societies.

Dendroclimatologist is a person who analysis the past climate conditions based on the study of rings present in trees.

A geophysicist are scientists who study the physical properties of earth.

A paleontologist studies ancient life, including animal and plant fossils

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The conversion factor that is present in almost all stoichiometry calculations is called the ________ __________ .
Kruka [31]
Mole=mass/molecular mass (Mr)
mole=volume/ 22.4
Molecular amount: Mole=amount atoms/ Avogadro's number 
Concentration: mole=volume x M
5 0
3 years ago
If the NaOH is added to 35.0 mL of 0.167 M Cu(NO3)2 and the precipitate isolated by filtration, what is the theoretical yield of
Ghella [55]

Answer:

The correct answer is - 0.570 grams

Explanation:

The balanced chemical reaction is given by

Cu(NO3)2(aq)     + 2NaOH(aq)    -------->    Cu(OH)2(s)      + 2NaNO3(aq)

        1.0 mole            2.0 mole                 1.0 mole          2.0 mole

number of mol of Cu(OH)2,

n = Molarity * Volume

= 35.0*0.167 = 5.845 millimoles

As clear in the equation, 1 mole of Cu(NO3)2 gives 1 mole of Cu(OH)2 , So, 5.845 millimoles of Cu(NO3)2 will produce 5.845 millimoles of Cu(OH)2

Mass of Cu(OH)2 = number of mol * molar mass

= 97.5*5.845*10^-3

= 0.570 grams

Thus, the correct answer is - 0.570 grams

8 0
3 years ago
What is the answer for this please ?<br> HNO3 + OH →
BartSMP [9]

Answer:

HNO3(aq) + OH-(aq) → NO3-(aq) + H2O(l)

Explanation:

According to Bronsted-Lowry theory, an acid is a substance that donates a proton (H+) and produces a conjugate base while a base is a molecule or ion which accepts the proton.

An example of Bronsted-Lowry acid and base is Nitric acid, HNO3 and hydroxide ion, OH- respectively as shown in the given reaction.

Thus, the nitric acid acts as an acid by donating a proton to the hydroxide ion which accepts it, thus producing nitrate ion, NO3- as a conjugate base, while OH- produces H2O as a conjugate acid.

8 0
3 years ago
What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?
Harrizon [31]
First you need to find the balanced chemical formula.
CuCl₂+2NaNO₃→2NaCl+Cu(NO₃)₂

Then you can find out how much NaCl 31.0g of CuCl₂ should produce using stoichiometry.  Divide 31.0g by the molar mass of CuCl₂ (134.446g/mol) to get 0.2306mol CuCl₂.  Than multiply 0.2306mol CuCl₂ by 2 to get 0.4612mol NaCl.  Than multiply 0.4612mol by the molar mass of NaCl (58.45g/mol) to get 26.95g of NaCl.
that means that 100% yield would give you 26.95g of NaCl so to find percent yield divide 21.2 by 26.95 to get 0.7867 which is 78.7% yield

Therefore the answer is 78.7% yield.
I hope this helps.  Let me know if anything is unclear
3 0
3 years ago
A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit the ball. The bat applies a 10-ne
RideAnS [48]
The bat hit the ball with a force of 10 Newtons.
4 0
3 years ago
Read 2 more answers
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