Ask question

Ask question

All categories

2 years ago

5

Two fossils with reptilian characteristics are part of a shipment of fossils sent to a museum. The only difference is that one o

f the fossils shows evidence that the organism had feathers. Which fossil is probably older and why?

1 answer:

SOVA2 [1]2 years ago

5 0

The one with feather. because it was probably form the Dino era

You might be interested in

In a constant‑pressure calorimeter, 70.0 mL of 0.350 M Ba(OH)2 was added to 70.0 mL of 0.700 M HCl. The reaction caused the temp

asambeis [7]

Answer:

ΔH = 57 Kj/mole H₂O

Explanation:

6 0

2 years ago

Read 2 more answers

What biological processes can add co2 to the atmosphere?

RSB [31]

Cellar respiration simple if u need explanation just search up

6 0

2 years ago

Why does nitrogen have stronger attractive forces between its nucleus and valence electrons than phosphorus?

timofeeve [1]

Answer:

Nitrogen atom is small in size than phosphorus thus the bond between its nucleus and valence electrons are stronger than phosphorus.

Hope it helps...｡◕‿◕｡

3 0

2 years ago

What is the density of a material if its mass is 32 grams and its volume is 8 milliliters

vagabundo [1.1K]

Answer:

4 kilograms/liters

Explanation:

5 0

2 years ago

Bromine has two isotopes 79Br and 81Br, whose masses (78.9183 and 80.9163 amu) and abundances (50.69% and 49.31%, respectively)

Reika [66]

Answer:

Average atomic mass = 79.9034 amu

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

<u>For first isotope: </u>

% = 50.69 %

Mass = 78.9183 amu

<u>For second isotope: </u>

% = 49.31 %

Mass = 80.9163 amu

Thus,

$Average\ atomic\ mass=\frac{50.69}{100}\times {78.9183}+\frac{49.31}{100}\times {80.9163}\ amu$

$Average\ atomic\ mass=40.0036+39.8998\ amu$

<u>Average atomic mass = 79.9034 amu</u>

4 0

2 years ago