1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gelneren [198K]
3 years ago
10

Using isotope, can we trace back again our ancestors? How?​

Chemistry
1 answer:
lidiya [134]3 years ago
4 0

Answer:

<h2><em><u>The answer is yes, we can trace back again our ancestors by using isotope. These isotopes are not just there to just exist, some of them are also useful in different kind of field especially in history and medical</u></em>.</h2>
You might be interested in
Just need help with these two questions
kvasek [131]
B/A hope it help thanks
8 0
2 years ago
A student carefully pipets 10.00ml of ethanol into a beaker. If ethanol has a density of 0.779g/ml, how many grams of ethanol we
lesantik [10]

Answer: 7.79 grams of ethanol were put into the beaker.

Explanation:

To calculate the mass of ethanol, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

Density of ethanol = 0.779 g/mL

Volume of water = 10.00 mL

Putting values in above equation, we get:

0.779g/mL=\frac{\text{Mass of ethanol}}{10.00mL}\\\\\text{Mass of ethanol}=(0.779g/mL\times 10.00mL)=7.79g

Thus 7.79 grams of ethanol were put into the beaker.

5 0
3 years ago
A cook places a pan of food on a hot stove and leaves it there. When the food is just about done cooking, which of the following
rjkz [21]

Answer:

C.

The pan will be the same temperature as the stove.

Explanation:

7 0
3 years ago
The beakers in the picture above are labeled according to the ionic solutions they contain. What metal or metals could replace c
tangare [24]

Explanation:

When a metal replaces another metal in solution, we say such a reaction has undergone a single displacement reaction.

In such a reaction, metal higher up in the activity series replaces another one due to their position.

To known the metal or metals that will replace the given copper, we need to reference the activity series of metals.

Every metal higher than copper in the series will displace copper from the solution.

So, there metals are: potassium, sodium, lithium, barium, strontium etc.

8 0
3 years ago
Which metal can be extracted from bauxite ore?​
Finger [1]
Aluminum
Bauxite ore is the world's primary source of aluminum. The ore must first be chemically processed to produce alumina (aluminum oxide). Alumina is then smelted using an electrolysis process to produce pure aluminum metal. Bauxite is typically found in topsoil located in various tropical and subtropical regions.
8 0
2 years ago
Read 2 more answers
Other questions:
  • A water sample has a pH of 8.2 and a bicarbonate concentration of 97 mg/L. What is the alkalinity of the sample in moles/L and i
    8·1 answer
  • Select the correct answer.
    6·2 answers
  • Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of
    10·2 answers
  • Using the equation PCl S(g) PCl 3(g) +Cl 2(g) , if PCl 3 is added, what way will the equilibrium shift?
    15·1 answer
  • There is a series of nitrogen oxides with the general formula N?O?. What is the empirical formula of one that contains 30.45% ni
    8·1 answer
  • Chem Muti Choice. Tell me the correct answer.
    13·2 answers
  • The mechanical advantage of a device refers to
    6·1 answer
  • Describe three findings of the Human Genome Project<br> Write it in your own words
    12·1 answer
  • Evidence that living things have evolved over hundreds of millions years can be found in
    8·1 answer
  • Arrange the following groups of substances in order, highest boiling point first (i) He, Ne and Ar (ii) Bromomethane, Fluorometh
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!