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
bazaltina [42]
2 years ago
7

When a mixture of iron powder and sulphur is heated it glows more brightly than that of iron filings and sulphur.Explain this ob

servation
Chemistry
1 answer:
Bond [772]2 years ago
3 0

Answer:

I don't know

Explanation:

mixture of iron powder and sulphur heated it glows because sulphur and iron are more reactive metals that they shine and sulphur can react with water produce fire it's write

You might be interested in
The volume of a cube is calculated by using the following formula: l x h x w. The length (l), height (h), and width (w) of a met
aliya0001 [1]

Answer:

8.909466637830

Explanation:

herp derp

8 0
2 years ago
Convert 732.0 mmHg to atm
enot [183]

Answer:

The answer is

<h2>0.95 atm</h2>

Explanation:

To solve the question we use the following conversion

That's

1 mmHg \cong 0.0013 atm

So we have

If 1 mmHg \cong 0.0013 atm

Then 732 mmHg will be

732 × 0.0013 atm

We have the final answer as

<h3>0.95 atm</h3>

Hope this helps you

5 0
3 years ago
What type of galaxy do we live in
strojnjashka [21]
We live in the Milky Way Galaxy
7 0
2 years ago
What condition must be met for a battery to be rechargeable?
Neko [114]

Answer:

D. The electrochemical reaction of the battery must be reversible.

Explanation:

The batteries are based on the production of an electric flux given by a<u> redox reaction</u>. This reaction is <u>spontaneous</u> and is<u> thermodynamically favored</u>.

Thus, when the reactants to the reaction are finished, the flow of current stops and ends. Therefore, when current is administered from another source, the reaction <u>changes its direction</u> and reagents that were previously consumed begin to occur. Therefore the condition for it to be <u>rechargeable</u> is that the reaction can go <u>forward or backward</u>, that is, it is <u>reversible</u>.

3 0
3 years ago
What is the concentration of the unknown h3po4 solution? the neutralization reaction ish3po4(aq)+3naoh(aq)→3h2o(l)+na3po4(aq) -g
hjlf
First, we need to get moles of NaOH:

when moles NaOH = volume * molarity 

                                  = 0.02573L * 0.11 M

                                 = 0.0028 moles 

from the reaction equation:

H3PO4(aq) + 3NaOH → 3 H2O(l) + Na3PO4(aq)

we can see that when 1 mol H3PO4 reacts with→ 3 mol NaOH

 ∴ X mol H3PO4 reacts with → 0.0028 moles NaOH

∴ moles H3PO4 = 0.0028 mol / 3 = 9.4 x 10^-4 mol

now we can get the concentration of H3PO4:

∴[H3PO4] = moles H2PO4 / volume

               = 9.4 x 10^-4 / 0.034 L

               = 0.028 M
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which probing question lies within the scope of physics? A. Are fish in the open ocean attracted by underwater sounds? B. Does i
    14·2 answers
  • The smallest unit of an element that maintains properties of that element is called a(n)
    7·1 answer
  • What is the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35
    10·1 answer
  • Calcium carbonate reacts with hydrochloric acid to form calcium chloride, carbon dioxide, and water. What mass of hydrochloric a
    10·1 answer
  • In the reaction, Zn(s) + 2 HCl(aq) --&gt; ZnCl2 (aq)+ H2(g), 25 grams of Zn are reacted with 17.5 g of HCl. How many grams of H2
    13·1 answer
  • Search blue bottle experiment, read over the reaction, and explain why the colorless solution turns blue
    7·1 answer
  • How many moles of O2 gas will be produced at STP from 4 moles of KC1O3
    9·1 answer
  • What is meant by the term polar molecule
    14·2 answers
  • Define and explain the concept of density as a property of matter
    12·2 answers
  • What is the limiting reagent when 9.517 g of Fe is allowed to react with 19.34 g of water according to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!