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
Mrrafil [7]
3 years ago
13

50 PONITS TO RIGHT AWNSERS!!!

Chemistry
2 answers:
Ivan3 years ago
7 0
Distance and period of time is the correct answer

Hope this helps!
emmasim [6.3K]3 years ago
7 0
To determine an object's speed you need to have distance and period of time like with a car to measure how fast it goes you use miles per hour which is distance and period of time
<span />
You might be interested in
The temperature of a freezer started at 18şc. After cooling for a few hours, the freezer had a temperature of –12şc. What is the
andre [41]
20 minus 2 plus 1 equals negative -2000000
8 0
2 years ago
Which properties make a metal a good material to use for electrical wires? malleability and reactivity conductivity and ductilit
Schach [20]
The metal properties that make up electrical wires are conductivity and ductility. Conductivity is important for free electrons to flow, hence electricity. Ductility is as well integral for strips to be formed, but with ample strength that does not break the material.
3 0
2 years ago
Read 2 more answers
What volume of water has the same mass as 9.0m3 of ethyl alcohol?
Triss [41]
This question requires the knowledge of density. 

The density of ethyl alcohol = 789 kg m⁻³
The density of water = 1000 kg m⁻³

Density = Mass / Volume 

By applying ethyl alcohol,
    789 kg m⁻³ = Mass / 0.9 m³
         Mass     = 710.1 kg
hence the mass of 0.9 m³ ethyl alcohol is 710.1 kg.

Then by applying water,
     1000 kg m⁻³ = 710.1 kg / Volume
      Volume        = 0.7101 m³
                          = 0.7 m³
hence the equal water volume is 0.7 m³
8 0
3 years ago
Can a chemical reaction happen with only one substance? For example, if you select water as the first substance but you don't ad
KATRIN_1 [288]

Explanation:

Yes, a chemical reaction can happen with only one substance.

A typical example of such reaction is the radioactive decay.

Radioactive decay is the loss of elementary particles from an unstable nucleus, ultimately changing the unstable element into another more stable element. .

When radioactive elements are let alone, they decompose to form  stable harmless elements.

An example of radioactive decay is attached in the image below;

8 0
3 years ago
Read 2 more answers
Ernest Rutherford's gold-foil experiment showed which of the following?
loris [4]
Ernest Rutherford's gold-foil experiment showed the density of atoms.
<span>The experiment proved that most of an atom is empty space with a very small positively charged nucleus in the middle. 
So, from the given statements he following is true: 
</span><span>Ernest Rutherford's gold-foil experiment showed </span>the existence of a dense, positively charged center in an atom. 
4 0
3 years ago
Other questions:
  • What is the basic unit for measuring length
    10·2 answers
  • An exothermic reaction __________ energy.
    12·2 answers
  • Please help with 3! Please give only the correct answer...
    15·1 answer
  • There are three competing factors at play here: 1. The effective nuclear charge 2. The size of the atom and the force of attract
    8·1 answer
  • The ions Cr3+ and O2- combine to form the ionic chromium oxide. in what proportions do these ions combine to produce a neutral c
    10·1 answer
  • How is heat transfer by radiation different than transfer by convection or conduction?
    13·2 answers
  • Each particle of water in an ocean wave moves in a circle true or false
    13·1 answer
  • WILL GIVE BRANLIEST!! EASY BUT I WAS TO LAZY TO LEARN!! WILL FOREVER BE GREATFUL!!!
    10·1 answer
  • Plz help I need the answer now!! Which statement is best supported by the evidence on the map?
    15·1 answer
  • It takes 120 mL of 0.15 M of carbonic acid (H2CO3) to neutralize 300 mL of sodium hydroxide (NaOH) for the following balanced ch
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!