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
ira [324]
2 years ago
13

Why do scientists use a mortar and pestle?

Chemistry
1 answer:
postnew [5]2 years ago
6 0

Due to increase the surface area of a solute.

Hope this helps have a very good dayyyyyy.........

You might be interested in
1: Scrieţi şi egalaţi ecuaţiile reacţiilor chimice de schimb prezentate mai jos: a) carbonat de sodiu + clorură de calciu = b) c
prisoha [69]

Answer:

AMBANTOT MO MALIGO KANA

5 0
3 years ago
What items are true about a block of ice at -10°C as you continue to apply heat
zhenek [66]

1. its temperature will rise continuously until it melts

I don't believe that any of the other answers are correct because it can not stay at a certain temperature if it is melting

5 0
3 years ago
How are the different colors generated by the flames? A. proton transitions B. reactions between different atoms C. electronic t
attashe74 [19]

Answer: C

Explanation:

According to Neils Bohr, atoms contain electrons which are arranged in energy levels. The energy levels proceed from the lowest to the highest. When energy is supplied to an atom,it moves from lower to higher energy levels. The higher energy level is known as the excited state. Excited states are short lived and atoms quickly return to ground state with emission of the absorbed energy in the form of visible light. This visible light must have one of the seven colours observed in the visible spectrum; Red, orange, yellow, indigo, blue, green, violet. Energy required for this excitation is supplied by heating the substance in a flame.

4 0
3 years ago
PLS HELP THE QUESTION IS ON THE PICTURE
IceJOKER [234]

<u>Concepts used:</u>

1 mole of an element or a compound has 6.022 * 10²³ formula units

So, we can say that: <em>Number of formula units = number of moles * 6.022*10²³</em>

number of moles of an element or a compound = given mass/molar mass

<u>__________________________________________________________</u>

<u>003 - </u><u>Number of CaH₂ formula units in 6.065 grams</u>

Number of Moles:

We know that the molar mass of CaH₂ is 42 grams/mol

Number of Moles of CaH₂ = given mass/molar mass

Number of moles = 6.065 / 42

Number of moles = 0.143 moles

Number of Formula units:

Number of formula units = number of moles * 6.022*10²³

= 0.143 * 6.022 * 10²³

= 0.86 * 10²³ formula units

__________________________________________________________

<u>004 </u><u>- Mass of 6.34 * 10²⁴ formula units of NaBF₄</u>

Number of Moles:

We mentioned this formula before:

<em>Number of formula units = number of moles * 6.022*10²³</em>

Solving it for number of moles, we get:

Number of moles = Number of Formula units / 6.022* 10²³

replacing the variable

Number of moles = 6.34 * 10²⁴ / 6.022*10²³

Number of moles=  10.5 moles

Mass of 10.5 moles of NaBF₄:

Molar mass of NaBF₄ = 38 grams/mol

Mass of 10.5 moles = 10.5 * molar mass

Mass of 10.5 moles = 10.5 * 38

Mass = 399 grams

__________________________________________________________

<u>005</u><u> - Number of moles in 9.78 * 10²¹ formula units of CeI₃</u>

Number of Moles:

We have the formula:

Number of moles = Number of Formula units / 6.022* 10²³

replacing the variables

Number of Moles = 9.78 * 10²¹ / 6.022*10²³

Number of Moles = 1.6 / 10²

Number of Moles = 1.6 * 10⁻² moles   OR   0.016 moles

3 0
2 years ago
Now draw the eight planets as circles, and label each one. The scale doesn’t need to be perfect. You can estimate the planets’ s
Ierofanga [76]

i dont now but thaks you po por the pionts

3 0
2 years ago
Read 2 more answers
Other questions:
  • Each element consists of only one type of atom. <br> a. True<br> b. False
    10·1 answer
  • What do elements in the same group on the periodic table have in common?
    9·1 answer
  • Calculate the volume, in milliliters, of a 0.330 M KOH solution that should be added to 6.000 g of HEPES (MW = 238.306 g/mol, pK
    7·1 answer
  • How does heating time affect the state of water?​
    6·1 answer
  • The melting point of your product is 10 degrees lower than the expected one. What conclusion can you make about the purity of yo
    15·1 answer
  • PLEASE ANSWER QUICK
    10·1 answer
  • What is the name of this molecule?
    6·2 answers
  • What is the definition of enriched uranium
    7·1 answer
  • What is the volume, in milliliters, of 6.56 g of acetone?
    5·1 answer
  • State and explain each law of motion.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!