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Ainat [17]
3 years ago
9

Sound is a _____ Wave because it cannot travel without a medium.

Chemistry
2 answers:
lord [1]3 years ago
5 0

Answer:

It is a longitudinal wave.

Explanation:

Hope this helped.

Sphinxa [80]3 years ago
3 0

Answer: Longitudinal wave

Explanation: These kind of wave requires a medium of propagation for energy to transfer.

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What are things that we use that are made of the elements on the periodic table
mylen [45]

Answer:

all matter (everything) is made of the elements on the periodic table

Explanation:

6 0
3 years ago
A mixture of caco3 and (nh4)2co3 is 60.7 % co3 by mass. part a find the mass percent of caco3 in the mixture.
blagie [28]

The mixture contains:

CaCO3 + (NH4)2CO3 in which the amount of carbonate CO3 = 60.7% by mass

Let, the total mass = 100 grams

Mass of CaCO3 = x grams

Mass of (NH4)2CO3 = y grams

Thus,       x + y = 100 ------------(1)

Mass of CO3 = 60.7% = 60.7 g

Molar mass of CO3 = 60 g/mol

Total # moles of CO3 = 60.7 g/60 g.mol-1 = 1.012 moles

The total moles of CO3 comes from CaCO3 and (NH4)2CO3. Therefore,

moles CaCO3 + moles (NH4)2CO3 = 1.012

mass CaCO3/molar mass CaCO3 + mass (NH4)2 CO3/molar mass = 1.012

x/100 + y/96 = 1.012---------(2)

based on equation 1 we can write: y = 100-x

x/100 + (100-x)/96 = 1.012

x = 71.2 g

Mass of CaCO3 = 71.2 g



7 0
3 years ago
If the temperature changes by 100k by how much does it change in °c?​
telo118 [61]

Answer:

-173.15°C

Explanation:

Given data:

Temperature changes = 100 K

Temperature changes in degree Celsius = ?

Solution:

Kelvin and degree Celsius both are units of temperature.

In order to convert the degree Celsius to kelvin following equation is used.

Temperature in degree Celsius +273.15

For example;

100°C to kelvin = 100+273.15 = 373.15 K

To convert the kelvin into degree Celsius:

100K - 272.15 = -173.15°C

3 0
3 years ago
How many orbitals are in the first energy level? A. 3 B.4 C.2 D.1
WINSTONCH [101]

Answer:

3 orbitals

Explanation:

3 0
3 years ago
Read 2 more answers
What makes an atom radioactive? A.Its electrons are easily pulled away. B.Its protons and electrons repel each other. C.Its nucl
docker41 [41]
C. It's nucleus can break apart.
If it's breaking apart, it's decaying in order to become more stable. Hope that helps!
3 0
3 years ago
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