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
djverab [1.8K]
3 years ago
14

A pure substance that is made of only one kind of atom is called _________. A. an element B. an electron C. a particle D. a prot

on
Chemistry
2 answers:
tekilochka [14]3 years ago
5 0
An element is a pure substance made up of only one kind of atom. An element is composed of atoms in which it is composed of neutrons and protons. The nucleus is surrounded by electrons. The answer to this problem is A. element
Crank3 years ago
4 0

The answer would an Element, A.

You might be interested in
What's the correct answer?
Andrews [41]

Answer:

smoother and less jagged

Explanation:

6 0
3 years ago
I have to covert 4.4×10^4 Pa in to atm
Kitty [74]
The answer is 4.40000
5 0
2 years ago
What is 0.000028474 in scientific notation
antiseptic1488 [7]

Answer:

2.8474 \:  \times  \:  {10}^{ - 5}

this the solution

6 0
3 years ago
Read 2 more answers
Why is it important to protect the ozone layer
Nimfa-mama [501]
If we don’t protect the ozone layer then it will start to seriously damage earth and we will all eventually die out.
7 0
3 years ago
Read 2 more answers
Write the balanced equation for the reaction of aqueous Pb ( ClO 3 ) 2 Pb(ClO3)2 with aqueous NaI . NaI. Include phases. chemica
FinnZ [79.3K]

<u>Answer:</u> The mass of precipitate (lead (II) iodide) that will form is 119.89 grams

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Molarity of NaI solution = 0.130 M

Volume of solution = 0.400 L

Putting values in above equation, we get:

0.130M=\frac{\text{Moles of NaI}}{0.400L}\\\\\text{Moles of NaI}=(0.130mol/L\times 0.400L)=0.52mol

The balanced chemical equation for the reaction of lead chlorate and sodium iodide follows:

Pb(ClO_3)_2(aq.)+2NaI(aq.)\rightarrow PbI_2(s)+2NaClO_3(aq.)

The precipitate (insoluble salt) formed is lead (II) iodide

By Stoichiometry of the reaction:

2 moles of NaI produces 1 mole of lead (II) iodide

So, 0.52 moles of NaI will produce = \frac{1}{2}\times 0.52=0.26mol of lead (II) iodide

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of lead (II) iodide = 0.26 moles

Molar mass of lead (II) iodide = 461.1 g/mol

Putting values in above equation, we get:

0.26mol=\frac{\text{Mass of lead (II) iodide}}{461.1g/mol}\\\\\text{Mass of lead (II) iodide}=(0.26mol\times 461.1g/mol)=119.89g

Hence, the mass of precipitate (lead (II) iodide) that will form is 119.89 grams

4 0
3 years ago
Other questions:
  • Which is a nonmetal ?<br><br> 1. Sodium (Na)<br> 2.lithium(Li)<br> 3. Calcium (ca) <br> 4. Carbon(c)
    5·2 answers
  • What happens when elements are chemically combined?
    12·2 answers
  • Create a graph of y=2x−6.<br> Construct a graph corresponding to the linear equation y=2x−6.
    15·1 answer
  • How does the disturbance travel through the coil when you move your arm back and forth?
    14·1 answer
  • Co2(g)+H20+148Kcal----&gt;H2Co3 Endotérmica o exotérmica
    8·1 answer
  • Analyze how water affects mass movements by using two examples of mass<br> movement.-
    8·1 answer
  • Balance Cl2+NaBr=NaCl+Br2​
    11·1 answer
  • Balance the following equation: N2 + H2 --&gt; NH3
    6·1 answer
  • What is oxidation number of S in H2SO5 ???​
    15·2 answers
  • You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is th
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!