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
BartSMP [9]
3 years ago
7

List two scientific questions that would be best explained using a model.

Chemistry
1 answer:
nikitadnepr [17]3 years ago
4 0

Answer:

The 20 big questions in science

1 What is the universe made of? ...

2 How did life begin? ...

3 Are we alone in the universe? ...

4 What makes us human? ...

5 What is consciousness? ...

6 Why do we dream? ...

7 Why is there stuff? ...

8 Are there other universes?

ec

Explanation:

You might be interested in
Within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as i
omeli [17]
13 and Meiosis because each chromosome has its own number and it's divided up. 

Hope I helped? 

4 0
4 years ago
Read 2 more answers
What are the name for : BeCl2.2H20 and LiNO2.H20
brilliants [131]
BeCl2 = Beryllium Chloride
2H2O = 2 molecules of H2O (water)
LiNO2 = Lithium Nitrate
H2O = water
5 0
3 years ago
Read 2 more answers
PLS HELPPP How many moles of oxygen atoms (not molecules) are present in 6.41×1025 molecules of dinitrogen pentoxide (N2O5)? 1.
olga55 [171]

Answer:

(4) 266 moles

Explanation:

We have Dinitrogen Pentoxide N2O5

6.41*10^25 molecules are given

No of Moles of N2O5 = \frac{No of Molecules }{Avogadro's Number}

                                     = \frac{6.41 * 10^25}{6.022*10^23}

                                      = 106.5 mol

Now using Unitary Method

2 Mole of Nitrogen pentoxide require 5 mole of Oxygen to form N2O5

1 mole of N = \frac{5}{2}*O

In 106.5 mole of N  = \frac{5}{2}*106.5 = 266.25 mole

So, 6.41*10^25 molecules of N2O5 will require 266.25 mole of Oxygen atoms.

5 0
3 years ago
A. At STP, what is the volume of 708 mol of nitrogen gas? 708 mol = 708 mol X L B. A sample of hydrogen gas occupies 14.1 L at S
elena-14-01-66 [18.8K]

Answer:

A. 15859.2 L or 15900 L

B. 0.629 mol

Explanation:

At STP, one mole is equal to approximately 22.4 L

L or mL is volume, so you are attempting to solve for L or mL.

A.

708 mol x (22.4 L/1 mol) = 15859.2 L (w/ significant figures included - 15900 L)

B.

(14.1 L) x (1 mole/ 22.4 L) = 0.629 mol.

5 0
3 years ago
A rock has a mass of 127 grams and displaces 32.1 mL of water. what is the density of the rock?
anzhelika [568]

Answer:

3.96 g/cm^3

Explanation:

5 0
4 years ago
Other questions:
  • Which of the following is a decomposition reaction?
    5·2 answers
  • In the following reaction, how many grams of oxygen will react with 10.47 grams of benzene (C6H6)? 2C6H6 + 15O2 12CO2 + 6H2O The
    14·2 answers
  • Metal cations are atoms that have a positive charge. What type of bond is metal cation likely to form?
    9·2 answers
  • What is the mass of 2.15 liters of N2 gas at STP?
    5·2 answers
  • Select which of the following describes Ionization Energy. Energy required to remove an electron from an atom. How strongly an a
    15·1 answer
  • I need to know the right answer ASAP please
    5·1 answer
  • Aluminum hydroxide, with heat, creates__
    13·1 answer
  • How many grams are there in 3.26 x 10^25 Molecules of Mg(NO3)2?
    12·1 answer
  • What do concentric contour lines on a topographic map represent?
    8·1 answer
  • The results of an investigation are usually more reliable if
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!