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tankabanditka [31]
3 years ago
8

Can someone help me with this question pls?

Chemistry
1 answer:
vlada-n [284]3 years ago
7 0

Explanation:

frequency = 1 wave/10s = 0.1 Hz

wavelength = 5.8 m

speed = wavelength × frequency

= (5.8 m)(0.1 Hz)

= 0.58 m/s

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Please just look up stuff about helium and put it in your own words 3-5 parts ill give brainly
andreyandreev [35.5K]

Answer:

Element Name & Symbol: Helium, He

Element Family : Noble Gasses

Atomic Number: 2

Atomic Mass: 4

Answer from Gauthmath

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3 years ago
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A 52.0 g of Copper (specific heat=0.0923cal/gC) at 25.0C is warmed by the addition of 299 calories of energy. find the final tem
Leto [7]

Answer : The final temperature of the copper is, 87.29^oC

Solution :

Formula used :

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

where,

Q = heat gained  = 299 cal

m = mass of copper = 52 g

c = specific heat of copper = 0.0923cal/g^oC      

\Delta T=\text{Change in temperature} 

T_{final} = final temperature = ?

T_{initial} = initial temperature = 25^oC

Now put all the given values in the above formula, we get the final temperature of copper.

299cal=52g\times 0.0923cal/g^oC\times (T_{final}-25^oC)

T_{final}=87.29^oC

Therefore, the final temperature of the copper is, 87.29^oC

4 0
4 years ago
Causes light rays passing through it to meet at a focal point A. Convex lens B. Concave lens or C. Both?
anyanavicka [17]

Answer:

A. Convex lens.

Explanation:

A convex lens causes light rays to meet at a focal point unlike concave, which lights rays spread out.

6 0
3 years ago
GIVING 5 STARS AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLY!! How many atoms does H2SO4 have?
mr_godi [17]

Answer: Sulfuric Acid, H2SO4 is a chemical compound made up of two hydrogen atom, one sulfer atom, and four oxygen atoms.



Explanation:

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3 years ago
What is the molarity of a solution that contains 1 mol CaCl2 dissolved in 2 L of solution?
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n=CV

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3 years ago
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