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astra-53 [7]
2 years ago
13

Which describes an element?

Chemistry
1 answer:
sesenic [268]2 years ago
3 0

Answer:

I think it's D one. Because all others are wrong

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GIVING OUT BRAINLIEST
d1i1m1o1n [39]

Answer:

it increases and is perpendicular to the motion of the wave.

4 0
3 years ago
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If an ocean wave has a frequency of 2 hz and a speed of 4 m/s , what is the wavelength
Anastaziya [24]

Answer:

2 m

Explanation:

6 0
3 years ago
A sample of O2 with an initial temperature of 50.0 oC and a volume of 105 L is cooled to -25 oC. The new pressure is 105.4 kPa a
Damm [24]

Answer:

71.92 kPa

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (kPa)

P2 = final pressure (kPa)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

T1 = 50°C = 50 + 273 = 323K

V1 = 105L

T2 = -25°C = -25 + 273 = 248K

P2 = 105.4 kPa

P1 = ?

V2 = 55.0 L

Using P1V1/T1 = P2V2/T2

P1 × 105/323 = 105.4 × 55/248

105P1/323 = 5797/248

0.325P1 = 23.375

P1 = 23.375 ÷ 0.325

P1 = 71.92 kPa

4 0
3 years ago
It has been established that 8.0x10^4 tons of gold (Au) have been mined. Assume gold cost $350 per ounce. Whats the total worth
bazaltina [42]
So first lets find out how much gold there is. 10^4=10,000so that means 8.0x10,000= 8,000. now we have to find out how much money that is. All we have to do is multiply 8,000 by 350. When multiplied you get $2,800,000
7 0
3 years ago
True or false? osmosis is a type of diffusion.
agasfer [191]

Answer:

true

Explanation:

osmosis is a special case of diffusion. diffusion occurs across a semipermeable membrane and only the water or other solvent moves. Diffusion and osmosis are both passive transport processes that act to equalize the concentration of a solution.

5 0
2 years ago
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