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Chemistry

1 answer:

Fantom [35]3 years ago

7 0

Number one: True Number 2: False because hot stars apear as blue-white and cool stars apear as red

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Calculate the number of moles in 8 g of water.

polet [3.4K]

Answer:

refer the above attachment

4 0

2 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).

It's not (1) because the whole point of primaries, secret ballots, recalls, and referendums was so political machines were not dominating
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 local government problem, not federal
It IS (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

Arrange the following elements in order from least to greatest electronegativity: Ca, F, Ne, Fe?

Burka [1]

Answer:

The electronegativity from order of least to highest is:

Ne, Ca, Fe, F

Explanation:

Elements in the periodic table have been arranged based on their level of electronegativity (which is the ability of an atom to attract electrons).

According to Paulings scale of rating elements based on their electronegativity, the electronegativity value of Fe, Ca, Ne, and F are 1.83, 1, 0 and 3.98 respectively.

Hence, based on Pauling scale, the order of electronegativity from least to highest is:

Ne > Ca > Fe > F

6 0

3 years ago

A 150 W electric heater operates for 12.0 min to heat an ideal gas in a cylinder. During this time, the gas expands from 3.00 L

Brut [27]

Answer: The change in internal energy of the gas is 108.835 kJ

Explanation:

To calculate the work done for reversible expansion process, we use the equation:

$W=P\Delta V=-P(V_2-V_1)$