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3 years ago

Which characteristic that a scientific measuring tool should have?

Chemistry

2 answers:

Likurg_2 [28]3 years ago

7 0

This would be measurements.

ivann1987 [24]3 years ago

4 0

Answer:

metric system

Explanation:

Scientists use the metric system, which uses the following base units: 1. Meter for length 2. Gram for mass 3. Liter for volume 4. Second for time Different prefixes

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List 2 things that about Velocity and Speed that are Different and two that are the same.

frozen [14]

Hey there!
Speed and velocity both:
1) Measure how fast something is moving
2) Both measured in miles per hour, meters/second, etc (rates)
However, there's a prime difference:
Different because:
1) Velocity is speed, but in a certain direction
2) Velocity is a vector
3) Velocity can be positive <em>or</em> negative, unlike speed.
I added another just in case you had a preference :)

Hope this helps!

8 0

3 years ago

Two students made the Lewis dot diagrams of H2O. The diagrams are as shown.

netineya [11]

Answer:

Only student A

Explanation:

don’t worry I got a 100

7 0

4 years ago

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Where are earthquakes and tsunamis more common and why?

Keith_Richards [23]

Tsunamis are the largest waves in the world. The edges of the plates, where earthquakes and volcanoes often occur, usually lie near the edges of the oceans

4 0

3 years ago

Read 2 more answers

What is the number of moles in 15.0 g AsH3?

pentagon [3]

We are given with the mass of Arsine ( $AsH_{3}$

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

$moles=\frac{mass}{molarmass}$

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

$moles=\frac{15}{77.92}=0.192mol$

7 0

3 years ago

Draw a Lewis structure for SO 2 in which all atoms obey the octet rule. Show formal charges. Do not consider ringed structures.

blagie [28]

Answer:

The answer is attached below

Explanation:

To draw the Lewis structure the sulphur willl be placed in the centre with the Valence electron sorrounding it the electrons between sulphu and oxygen to form bonds

5 0

3 years ago