All categories

2 years ago

Why do you think the astronomical unit is not used to measure distances on earth?

2 answers:

3 0

Answer:One Astronomical Unit is the distance between the Earth and the Sun, this acts as a sort of a cosmic metre stick. Astronomers don't and cannot measure distances. Distances are merely inferred from what actually has been measured, such as an angle, a relative luminosity, a time period

Explanation:

saw5 [17]2 years ago

3 0

Answer:

you would have to use decimals in the quadrillionths if you measure in meters. so 11 0s before the number

You might be interested in

Joebert had a rectangular cup and filled it with water. He measured the water's mass and volume. Then he got a density of 1.25g/

ANTONII [103]

Answer:

Percent error = 25%

Explanation:

Given data:

Measured density of water = 1.25 g/mL

Accepted density value of water = 1 g/mL

Percent error = ?

Solution:

Formula:

Percent error = (measured value - accepted value / accepted value) × 100

Now we will put the values in formula:

Percent error = (1.25 g/mL - 1 g/mL /1 g/mL )× 100

Percent error = (0.25 g/mL /1 g/mL )× 100

Percent error = 0.25 × 100

Percent error = 25%

5 0

3 years ago

Do electrons have more or less mass than neutrons

nata0808 [166]

Electrons have less mass than a neutron.

3 0

3 years ago

K3PO4+AgNO3--> ??? Ba(HCO3)2+Ba(OH2)-->

GuDViN [60]

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For 1:

When potassium phosphate reacts with silver nitrate, it leads to the formation of silver phosphate and potassium nitrate.

The balanced chemical equation follows:

$3AgNO_3+K_3PO_4\rightarrow Ag_3PO_4+3KNO_3$

For 2:

When barium bicarbonate reacts with calcium hydroxide, it leads to the formation of barium carbonate, calcium carbonate and water

The balanced chemical equation follows:

$Ba(HCO_3)_2+Ca(OH)_2\rightarrow BaCO_3+CaCO_3+2H_2O$

5 0

3 years ago

How many liters of water can be formed if 1.65 liters of ethylene are consumed

alexandr1967 [171]

Ethylene Burns in the presence of O₂ to produce CO₂ and H₂O vapors;

C₂H₄ + 3 O₂ → 2 CO₂ + 2 H₂O

According to equation,

22.4 L (1 mole) C₂H₄ reacts completely to produce = 44.8 L (2 moles) of H₂O

So,

1.65 L of C₂H₄ on complete reaction will produce = X L of H₂O

Solving for X,

X = (1.65 L × 44.8 L) ÷ 22.4 L

X = 3.3 L of H₂O

4 0

3 years ago

Which of the following sets contains a substance that could not be used as an acid base indicator?

vovangra [49]

Is there multiple choice answers

5 0

3 years ago