Jordan wonders why there is dew on the grass in the morning. He asks a few friends to see what they think. His friend Tasha says that there is dew on the grass because it always rains at night. Did Jordan find a scientific answer?
Answers
No because dew is water droplets that come from condensation rather than from rain coming at night
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the Progressive Era to
(1) preserve the power of political machines
(2) provide equal political rights for Native
American Indians
(3) protect States rights against federal power
(4) increase citizen participation in government
Answers
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.
Answers
=
= 1.658 *
18) mol =
Let mass of oxygen = x
= 17.9 g
Answers
The strong acid and strong base has high rate constant of dissociation. Weak acid and base are the one whose rate constant for the dissociation is low, they do not dissociate readily in water. Therefore, the given statement is false.
What are acid and base?
Acid is a solution which releases H⁺ hydrogen ion when dissolved in water. Base are the solution which releases hydroxide ion OH⁻ ion when dissolved in water. pH is measurement of hydronium ion.
A buffer is a solution containing either a weak acid and its salt or a weak base and its salt, which is resistant to changes in pH. The statement is false. When you add an acid or base in amounts greater than the buffer capacity you no longer have the buffer to influence solution pH.
Therefore, the given statement is false.
To know more about acid and bases, here:
#SPJ2
if a sample of magnesium has a mass of 60 g, how many moles of magnesium does the sample contain
Answers
Answer : The moles of magnesium will be, 2.5 moles
Explanation : Given,
Mass of magnesium = 60 g
Molar mass of magnesium = 24 g/mole
Formula used :
Now put all the given values in this formula, we get the moles of magnesium.
Therefore, the moles of magnesium will be, 2.5 moles
x moles of Mg-------------60g
x = 2,47 moles of Mg
answer: 2,47 moles of magnesium
1.) The fact that matter can be neither created nor destroyed in a chemical change.
2.) Substance that changes to a gas easily at room temperature.
3.) Any chemical reaction that absorbs energy.
4.) Can be observed only when there is a change in composition of a substance.
5.) Any chemical reaction that gives off energy.
6.) The amount of matter contained in a unit of volume.
7.) The type of change in which the identity of substances does not change.
8.) The change of one or more substances into other substances.
9.) Can be observed without any change in the identity of the substance.
10.) Another term for chemical change.
chemical property
physical change
physical property
chemical change
density
law of conservation of mass
chemical reaction
volatile
endothermic
exothermic
energy
Answers
Answer:
1) law of conservation of mass
2) volatile
3) endothermic
4) chemical property
5) exothermic
6) density
7) physical change
8) chemical change
9) physical property
10) chemical reaction
Answers
The white blood cells are the ones who leave the blood and enter tissues to fight off pathogens and invaders. They are not platelets because platelets help the healing of wounds and prevent it from bleeding by forming blood clots on the wounded area. They are not red blood cells because they carry oxygen all throughout the body organs. And they are not capillaries because capillaries are the ones that transports the oxygenated blood into the arteries.
antibodies is your answer