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MA_775_DIABLO [31]
3 years ago
13

What is used to help water wash away greasy dirt

Chemistry
2 answers:
sleet_krkn [62]3 years ago
8 0

Answer:

soap

Explanation:soap

never [62]3 years ago
5 0
Soap and water ..,,...,,,,,?!!’mnbvc
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Describe the contributions of 3 scientists to our current understanding of the atom
bogdanovich [222]

Answer:

1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.

2. J.J Thomson discovered electrons by conducting cathode ray experiment.

3. Dalton postulated that matter is made up of small particles caled atoms

8 0
3 years ago
Please help me don’t scam
rosijanka [135]

Answer:b

Explanation:

4 0
3 years ago
6. Cuando se oxidan en el aire 12,120 g de vapor de Zinc se obtienen 15,084 g del óxido. ¿Cuál es la fórmula empírica del óxido?
Eddi Din [679]

Answer:

 12120 g  +    O2        =    15084 g

m Zn = 12.120 Kg

m óxido = 15.084 Kg

1. calcular la masa de cinc en gramos

g = 12,120 Kg x 1000 = 12120 g de cinc

g = 15.084 Kg x 100 = 15084 g de oxígeno

2.  calcular gramos de Oxigeno

g O = 15084 g - 12120 g = 2964 g O2

3. calcular % de Zn y O

%m/m ( m soluto / m solc.) x 100

%m/m (Zn) =  ( 1210 g / 15084 g ) x 100

% m/m (Zn) = 80.35 % = 80.35 g

%m/m (O) =  ( 2964 g / 15084 g ) x 100

% m/m (Zn) = 19.65 %  = 19.65 g

4. Calcular moles de cada elemento

Zn: 80.35 g / 65.38 g/mol = 1.228 mol

O: 19.65 g / 16 g/mol = 1.228 mol

5. dividir entre el menor de los elementos

Zn: 1.228 mol / 1.228 mol = 1

O: 1.228 mol / 1.228 mol = 1

6. Fórmula empírica: ZnO

3 0
3 years ago
The formation of a gas or a precipitate may be evidence for a ___________.
ololo11 [35]
Reaction [taking place]

Hope that helps
5 0
3 years ago
what object experiences a frequency equal to its natural frequency _______ is said to have occurred. 1. resonance 2. frequency 3
Talja [164]
Amplitude is the awnser glad I could help you
8 0
3 years ago
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