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3 years ago

How do the major and minor scale divisions relate the precision of measurements taken with a metric ruler or graduated cylinder?

Chemistry

1 answer:

Nata [24]3 years ago

7 0

Answer: Major scale and minor scale both relate the precision of measurements with more true value of measurement.

Explanation:

Major scale in a measuring device is maximum unit value on the scale that can be measured.

Minor scale in a measuring device is a least unit value on the scale that can be measured.

In a metric ruler major scale is 1 cm and minor scale is 0.1 mm which means one can measure accurate value up-to one decimal point and in 10 ml of graduated cylinder major scale division is 1 ml minor scale division is 0.01.

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AgBr+Cl2=AgCl+Br2 REDOX!! HELP PLZ A LOT OF POINTS

mars1129 [50]

2AgBr+Cl2=2AgCl+Br2

You want everything to be the same on both sides the easiest way to do that is draw a line down the equal sign and write out all you compound and how many there are and do the same on the other side until there even

4 0

3 years ago

A person of 82 kg is in an elevator. If the elevator is moving at a speed of 5m/s, what’s the person’s kinetic energy.

andre [41]

Answer:

The person’s kinetic energy is 1,025 J

Explanation:

Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.

Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a position of rest, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its state of rest by applying a force.

Kinetic energy is represented by the following formula:

$Ec=\frac{1}{2}*m*v^{2}$

where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m/s).

In this case:

Ec= ?
m= 82 kg

v= 5 $\frac{m}{s}$

Replacing:

$Ec=\frac{1}{2}*82 kg*(5\frac{m}{s} )^{2}$

Solving:

Ec= 1,025 J

The person’s kinetic energy is 1,025 J

3 0

3 years ago

Sam and Joe are trying to determine whether their ideas are scientific or pseudoscientific. Sam's idea is not rejected when expe

xenn [34]

Answer:

See the complete question and the answer below

Explanation:

Sam and joe are trying to determine whether their ideas are scientific or pseudoscientific. sam's idea is not rejected when experiments produce different results. joe's idea gives the same result when tested repeatedly. which statement is correct about sam and joe's idea?

both ideas could be scientific.

neither idea could be scientific.

only sam's idea could be scientific.

only joe's idea could be scientific.

The correct answer here would be that both ideas could scientific.

Scientific ideas are those that hold true or not rejected after being tested by different experiments. Pseudoscientific ideas cannot hold true after being tested by experiments.

If an idea is tested by repeated experiments and the experiments produce different results, the idea might remain unrejected if there are no overwhelming evidence to do so from the experiments. That an idea remains unrejected due to inadequate experimental evidence, however, does not mean it is scientific or unscientific.

In the same vein, that a repeatedly tested idea gives the same results does not mean that the idea is scientific unless the results say so. If results repeatedly go against the idea, it means such an idea is unscientific or pseudoscientific.

Hence, both Joe and Sam's idea could be scientific, provided further experimental investigations are carried out.

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4 years ago

The heat capacity of an object depends on its ______

sdas [7]

Answer:

mass I hope can help this answer

Explanation:

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6 0

3 years ago

What mass of hydrochloric acid that reacted with zinc will produced 0.15dm3 of hydrogen at st.p? Equation for this reaction:

MrMuchimi

Answer:

${ \tt{22.4 \: dm {}^{3} \: contains \: 1 \: mole \: of \: hydrogen }} \\ { \tt{0.15 \: {dm}^{3} \: will \: contain \: ( \frac{0.15}{22.4} \times 1) \: moles }} \\ = 0.0067 \: moles \\ { \bf{mole \: ratio = 1 :1 }} \\ { \tt{1 \: mole \: weighs \: 65.38 \: g}} \\ { \tt{0.0067 \: moles \: weighs \: (0.0067 \times 65.38) \: g}} \\ = 0.44 \: g$

4 0

4 years ago