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
rusak2 [61]
4 years ago
13

Please help!!

Chemistry
2 answers:
ludmilkaskok [199]4 years ago
8 0

Answer:

yes, the law of conservation of mass hold true in this case burning magnesium strip is explained by this equation 2 Mg (s) + O2 (g) -> MgO (s)So the lighter magnesium, after reacting with oxygen in air, forms the heavier magnesium oxide. molar mass of magnesium and magnesium oxide are 24g and 40g respectively. So the same ratio 24:40 (i.e. 3:5) is maintained in the given masses of 48g and 80g, which means mass is conserved in the reacion.

Explanation:

Brainiest Please!!!

Mnenie [13.5K]4 years ago
8 0

Answer:

Yes, because when burning the magnesium strip the surrounding air also interacted and combined with it. In the experiment the final product weighs 80 grams, so you would subtract 80 – 48 leaving you with 32 grams. So the total mass of air that was added was 32 grams.

Ps. don't copy just reword

Explanation:

You might be interested in
Why do gases spread throughout the air, but liquids or solids stay together?
NeX [460]

Answer:

In gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.

Explanation:

6 0
3 years ago
Read 2 more answers
Write a paragraph (5-7 sentences) describing pH and conductivity.
PilotLPTM [1.2K]

Answer:

pH is a measure of hydrogen ion concentration, a measure of the acidity or alkalinity of a solution. The pH scale usually ranges from 0 to 14. Aqueous solutions at 25°C with a pH less than 7 are acidic, while those with a pH greater than 7 are basic or alkaline. A pH level of 7.0 at 25°C is defined as "neutral" because the concentration of H3O+ equals the concentration of OH− in pure water. On the other hand, electrical conductivity is a non-specific measurement of the concentration of both positively and negatively charged ions within a sample. So the short answer to the question is as follows, the presence of any hydrogen ions present in a substance will impact the pH level and most probably influence conductivity levels. However, hydrogen ions make up only a small part of the ion concentration measured by a conductivity meter.

4 0
3 years ago
2 nf3 + 225 kj -> n2 + 3f2 is it exothermic or endothermic
velikii [3]
Due to energy being a reactant instead of a product, the process is endothermic. The system must absorb a quantity of energy before it can react, so it must be an endothermic system.
6 0
4 years ago
Does somebody know the answer ?
Alex777 [14]
H2O is the missing reactant.

Just a caveat: this equation isn’t balanced.
3 0
3 years ago
How can weak acids and weak bases cause pH stress to cells?
telo118 [61]

Answer:

b

Explanation:

If a cell has transporters that are not well regulated, weak acids or weak bases can accumulate inside the cells and cause stress.

3 0
3 years ago
Other questions:
  • If 9.5 atms of pressure were increased to 25 atms of pressure, what would be the final volume
    11·1 answer
  • What is the number of moles of H2O produced if you combust two moles of CH4 according to the following balanced equation? CH4 +
    13·1 answer
  • This excerpt from William Shakespeare’s The Tempest is an example of ___________.
    12·1 answer
  • What is Ionization Energy?
    6·2 answers
  • What is the molecular formula of a compound with the empirical formula C13H19O2 and molar mass of 414.64 g?
    11·1 answer
  • What is the pOH of a solution that has a OH - concentration equal to 1.3x 10^-10
    8·2 answers
  • What is 29383.0398 <br>to the nearest hundredth?
    10·1 answer
  • What bond would ba and br make?
    12·2 answers
  • Is leaving an iron nail outside a chemical or physical change? NEED REASONS!
    8·1 answer
  • When chemical reactions occur the _____ but the _____.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!