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eduard
3 years ago
8

Which has greater kinetic energy: a bullet that has a mass of 0.05kg travelling at 2,500m/s, or a lorry that has a mass of 4,500

kg and is moving at 50m/s?
lorry
bullet
Chemistry
2 answers:
Vladimir [108]3 years ago
6 0

Answer:

the answer will be lorry

FromTheMoon [43]3 years ago
6 0

Answer:

I'm really sorry man but I'll answer yours when I see you again

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How can it rain when the temperature is below freezing
kvv77 [185]

Answer:

Cools to a temperature below freezing.

Explanation:

Hope this helps :D

7 0
2 years ago
What is the mass of 22.4L of H2 at stp
bazaltina [42]

Answer:

2.02 g H₂

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Explanation:

<u>Step 1: Define</u>

22.4 L H₂ at STP

<u>Step 2: Identify Conversions</u>

STP - 22.4 L / mol

Molar Mass of H - 1.01 g/mol

Molar Mass of H₂ - 2(1.01) = 2.02 g/mol

<u />

<u>Step 3: Convert</u>

<u />22.4 \ L \ H_2(\frac{1 \ mol \ H_2}{22.4 \ L \ H_2} )(\frac{2.02 \ g \ H_2}{1 \ mol \ H_2} ) = 2.02 g H₂

5 0
3 years ago
Primaries, the secret ballot, and the use of
algol [13]
(4) Increase citizen participation in government

Primary: a way for citizens to vote for new government officials, not too influenced by party leaders
Secret Ballot: keeping a voter's votes private from others
Recall: a way for citizens to remove a government official from office
Referendum: a way for citizens to vote for or against something proposed by the legislature

During the Progressive Era, many local governments were lead by corrupt political machines. They would rig elections in their favor as well as threaten those who voted against them. Many would appoint their supporters who weren't usually qualified to government positions as incentive to vote for them (I don't know if you care but that's called the spoils system).

<span>It's not (1) because the whole point of primaries, secret ballots, recalls, and referendums was so political machines were not dominating
</span>It's not (2) because none of this has a lot to do with Native Americans
It's not (3) because the political machines were a <u>local</u> government problem, not federal
It <u><em></em>IS</u> (4) because by getting more people involved in the government, they can elect qualified officials, vote on laws that best benefit the people, and minimize corruption.
8 0
4 years ago
For a gas sample containing equimolar amounts of carbon monoxideand heliumat 300 K, heliumhas _____________average speed and ___
igor_vitrenko [27]

Answer:

Option C (a higher; the same) is the appropriate response.

Explanation:

Given:

Temperature,

T = 300 K (both N_2 and H_2)

As we know,

Average speed of a molecule,

⇒ \bar v=\sqrt{\frac{8RT}{\pi  M} }

Thus, the average speed of N_2 will be lower as its molar mass is greater than H_2.

Now,

⇒ Average \ kinetic \ energy = \frac{3}{2} \ KT (not depend on molar mass)

Hence, it will be the same.

The other three alternatives aren't connected to the scenario given. So the above is the correct answer.

4 0
3 years ago
What is the oxidation state of N in NaNO3?<br> O A. +6<br> B. +5<br> O<br> C. -1<br> o<br> D. O
Aleks [24]
The oxidation state of N is

B.+5
3 0
3 years ago
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