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4 years ago

9

I need this ASAP pleaseeeeI’ll give you most Brainly

1 answer:

fgiga [73]4 years ago

6 0

Answer:

1) B a compound

2) C a heterogeneous mixture

3) A an element

Explanation:

1) I know this because a compound is mixture of different elements which cannot be identified by the naked eye. And from the statement above the substance is distinguished to have to different elements by its chemical formula.

2) I know this because a heterogeneous mixture is a mixture composed of two or more elements which can easily be seen by the physical eye or can be distinguished easily.

3) I know this because noble gases are not a mixture of any kind. They are elements. Elements are substances that cannot be broken down into simpler substances.

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One. Possible explanation for the fact that some simple one cell organism did not evolve into complex multicellular organisms is

sladkih [1.3K]

There was no need to. They must have been able to survive just fine without the use of other cells

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3 years ago

An auditorium measures 35.0 m x 30.0 m x 5.0 m. The density of air is 1.20 kg/m^3. (a) What is the volume of the room in cubic f

Ksenya-84 [330]

Answer:

(a) 1852259 $ft^3$ (b) 489085.47 pound

Explanation:

We have given auditorium measures 35 m×30 m×5 m

We know that 1 meter = 3.28 feet

So the measure of auditorium = 35×3.28 feet ×30×3.28 feet× 5×3.28 feet

(a) So the volume of the auditorium $=35\times 3.28\times 30\times 3.28\times 5\times 3.28=185259.648ft^3$

Density is given as $d=1.20kg/m^3$

(b) weight of air = volume × density $=185259.648\times 1.2=222311.577kg$

We know that 1 kg = 2.20 pound

So 222311.577 kg =222311.577×2.20=489085.47 pound

5 0

4 years ago

Kiley, Jermaine, and Gunther are playing tug-of-war. Kiley and Jermaine are on the same side of the rope, and Gunther is on the

Ivanshal [37]

-45N because you add the side together and make it equal 0

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4 years ago

Read 2 more answers

Question 2 A horizontal line on a position vs time graph means the object is O moving faster. O at rest O slowing down. O moving

Salsk061 [2.6K]

Explanation:

this question can also shown in figure

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3 years ago

Suppose that an object undergoes simple harmonic motion, and its displacement has an amplitude A = 15.0 cm and a frequency f = 1

cestrela7 [59]

Answer:

Maximum speed ( v ) = 10.4 m/s (Approx)

Explanation:

Given:

Amplitude A = 15.0 cm = 0.15 m

Frequency f = 11.0 cycles/s (Hz)

Find:

Maximum speed ( v )

Computation:

Angular frequency = 2πf

Angular frequency = 2π(11)

Angular frequency = 69.14

Maximum speed ( v ) = WA

Maximum speed ( v ) = 69.14 x 0.15

Maximum speed ( v ) = 10.371

Maximum speed ( v ) = 10.4 m/s (Approx)

5 0

3 years ago