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2 years ago

What is the frequency of an electromagnetic wave with a wavelength of 1.0 x 10' m?

Chemistry

1 answer:

Dmitriy789 [7]2 years ago

6 0

The frequency of the wave is A

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Often express in psi, pressure is the term for force per unit of

taurus [48]

Answer:

Surface area

Explanation:

psi = pound square inch

Often expres in psi, pressure s the term for force per unit of surface area.

8 0

10 months ago

How many moles of H20 are required to react completely with 7.30 moles of NO2?

Paraphin [41]

Answer:

2.43 moles of water are require.

Explanation:

Number of moles of water required = ?

Number of moles of NO₂ available = 7.30 mol

Solution:

Chemical equation:

3NO₂ + H₂O → NO + 2HNO₃

now we will compare the moles of NO₂ with H₂O.

NO₂ : H₂O

3 : 1

7.30 : 1/3×7.30 = 2.43 mol

5 0

2 years ago

Which process maintains homeostasis by replacing cells that die or get damaged? A. Cell division B. Cell respiration C. Exceptio

aleksandr82 [10.1K]

Answer:

Cell division

Explanation:

Cell division helps maintain homeostasis in living things since it creates new cells which can be used for growth and repair.
<em><u>Cell division occurs into two types, meiosis and mitosis . During mitosis, the cell creates two identical daughter cells that are identical to the parent cell, in terms of the number of chromosomes.</u></em>
These new cells are necessary to replace old cells that die in the organism, or to repair damage to the body.

7 0

2 years ago

Number 2 how many moles of propane (C3H8) are there in 6.2 g of propane? Correct answer will get brainliest.

skad [1K]

In 1 mole of propane, there are 44 grams
so, X moles = 6.2 grams
Cross multiply: 44x = 6.2
x = 0.14 moles
(In scientific notation) The answer is B

6 0

2 years ago

A certain satellite orbiting Earth has a speed of about 17,000 miles/hour. What is its approximate speed expressed to the correc

algol [13]

Answer:- The speed of the satellite is 7.6 $\frac{kilometer}{second}$ .

Solution:- It's a unit conversion problem that could be solved using dimensional analysis which is also known as train trail method.

The given speed of the satellite is 17000 miles per hour and we are asked to convert it to kilometers per second.

given:

1 Kilometer = 0.62 mile

1 hour = 3600 second

Let's use this given info and plug in the values to make the set up as:

$17000\frac{mile}{hour}(\frac{1 kilometer}{0.62 mile})(\frac{1 hour}{3600 second})$

= 7.616 $\frac{kilometer}{second}$

We round the answer to two significant figures, since the given number(17000) has only two significant figures.

Hence, the speed of the satellite is 7.6 $\frac{kilometer}{second}$ .

6 0

2 years ago