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Mademuasel [1]
2 years ago
11

A scientist is combining two gray elements. He thinks he will get a gray compounds. Use what you learned in this lesson to expla

in why this prediction may not be correct
Chemistry
1 answer:
adelina 88 [10]2 years ago
3 0

Answer:

Explanation:

Depending on the elements that are being combined, a chemical reaction could occur and cause a change of color to take place if the elements reacts to the other one.

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Select odd one out.<br> I) O<br> II) Na<br> III) Cu<br> IV) Ag
USPshnik [31]

Explanation:

0 is the odd one...............

and rest are metals and they lose electron and 0 gain electron and is non metal

4 0
3 years ago
Read 2 more answers
A beam of light has a wavelength of 24.0 μm ( μm = 10 -6m). What is its frequency?
vfiekz [6]

Answer:

Frequency = 1.25 ×10¹³ Hz

Explanation:

Given data:

Wavelength of light = 24.0  μm (2.4 ×10⁻⁵ m)

Frequency = ?

Solution:

Formula:

Speed of light = wavelength × frequency

Speed of light /wavelength = frequency

Frequency = 3×10⁸ m /s /2.4 ×10⁻⁵m

Frequency = 1.25 ×10¹³ s⁻¹

s⁻¹ = Hz

Frequency = 1.25 ×10¹³ Hz

6 0
3 years ago
A 37.2-g sample of lead (Pb) pellets at 20°C is mixed with a 62.7-g sample of lead pellets at the same temperature. What are th
Vesnalui [34]

Answer:

Mass of sample is 99.9 g, density of ample is 11.35 g/cm^{3} and temperature of sample is 20^{0}\textrm{C}

Explanation:

Mass is an additive property. Therefore mass of combined sample is summation of masses of two pellets.

Mass of combined sample = (37.2+62.7) g = 99.9 g

Density is an intensive property. Therefore density of combined sample of lead will be same as with density of Pb.

Density of combined sample = 11.35 g/cm^{3}

Temperature is an intensive property. Therefore temperature of combined sample of lead will be same as with individual pellets.

temperature of combined sample = 20^{0}\textrm{C}

8 0
3 years ago
Was i correct? -w- <br> please answer below if i was im totally sure i am
earnstyle [38]

Answer:

y e s good job

Explanation:

7 0
3 years ago
During complete combustion, natural gas combines with oxygen to produce _____.
natta225 [31]
The carbon dioxide and water are formed, for example:

CH₄ + 2O₂ = CO₂ + 2H₂O
methane

2C₂H₆ + 7O₂ = 4CO₂ + 6H₂O
ethane

C₃H₈ + 5O₂ = 3CO₂ + 4H₂O
propane
6 0
3 years ago
Read 2 more answers
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