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
Vlad1618 [11]
2 years ago
13

Scientists use their to make observations

Chemistry
2 answers:
frosja888 [35]2 years ago
5 0
Microscopes?
Scanners?
Transmitters?
Cameras?
Hand lens?
There are a lot
andreev551 [17]2 years ago
3 0
Eyes?
Tools?
Experience?
You might be interested in
A 0.02 molar solution of sodium chloride contains 0.1 mole of solute. What is the volume of the solution
Deffense [45]

Answer:

Volume of solution = 5 L

Explanation:

Given data:

Molarity of solution = 0.02 M

Moles of solute = 0.1 mol

Volume of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

0.02 M = 0.1 mol / volume of solution

Volume of solution = 0.1 mol / 0.02 M

Volume of solution = 5 L

3 0
2 years ago
Which statements correctly describe characteristics of cells? Check all that apply. A. Animal cells are all generally circular i
Gnoma [55]

Answer:

A. Correct

B. Wrong

C. Wrong.

D. Correct.

E. Correct.

Explanation:

8 0
2 years ago
A 4.36 g sample of an unknown alkali metal hydroxide is dissolved in 100.0 ml of water. an acid-base indicator is added and the
Fofino [41]

Answer:

(a) 102.6g/mol

(b) Rubidium

Explanation:

Hello,

This titration is carried out by assuming that the volume of base doesn't have a significant change when the mass is added, thus, we state the following data a apply the down below formula to compute the molarity of the base solution:

V_{base}=0.1L; M_{acid}=2.5M, V_{acid}=0.017L\\V_{base}M_{base}=V_{acid}M_{acid}

Solving for the molarity of base we've got:

M_{base}=\frac{M_{acid}*V_{acid}}{V_{base}}=\frac{2.50M*0.017L}{0.1L} =0.425M=0.425mol/L

Now, we can compute the moles of the base as:

n_{base}=0.425mol/L*0.1L=0.0425mol

(a) Now, one divides the provided mass over the previously computed moles to get the molecular mass of the unknown base:

\frac{4.36g}{0.0425mol} =102.6g/mol

(b) Subtracting the atomic mass of oxygen and hydrogen, the metal's atomic mass turns out into:

102.6g/mol-16g/mol-1g/mol=85.6g/mol

So, that atomic mass dovetails to the Rubidium's atomic mass.

Best regards.

8 0
3 years ago
The answer has to be 3 to 5 sentences for me to get full credit. ❤❤​
shusha [124]
The periodic table is an important but rather dry scientific tool. It lists all the chemical elements, ordered by their atomic numbers. Elements with similar behavior are grouped in the same column (called a group), with metals generally on the left and non-metals (gases) on the right. Rows are called “periods” - hence, periodic table.


Is this what you looking for ???
8 0
3 years ago
Please helppp asaappppppp
Zanzabum

Answer:

B. s, p, d, f

Explanation:

These things are often referred to as suborbitals and you normally have s,p,d,f.

S has 1 two orbitals

P has 3 orbitals

D has 5 orbitals

F has 7 orbitals

and each orbital can house 2 electrons

8 0
3 years ago
Other questions:
  • Which term best describes the molecular geometry of ethylene, C₂H₄?
    7·1 answer
  • Explain how heat would change the density of a parcel of air
    12·1 answer
  • A bucket of water contains 5.45 L of water, how many mL of water is this ?
    6·1 answer
  • What happens when K2O dissolves in water?
    10·1 answer
  • Help please!!! How far is the barred-spiral galaxy from Earth?
    9·1 answer
  • Determine the value of the equilibrium constant (report
    5·1 answer
  • Purchasing insurance can help Adrian risk. Adrian’s best decision in this case is to because the policy is
    11·1 answer
  • 38 points!! >:D
    7·2 answers
  • I need answers to all of them
    11·1 answer
  • A sample of nitrogen occupies a volume of 250 mL at 25 oC. What volume will it occupy at 95 oC?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!