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2 years ago

A 10-Newton object displaces 12 Newtons of water. Will this object sink of float?

Chemistry

2 answers:

timurjin [86]2 years ago

6 0

This object would float

Gennadij [26K]2 years ago

4 0

<u>Answer:</u> The object will float.

<u>Explanation:</u>

Balanced force is defined as the force that gets cancelled out when equal forces are acting in the opposite direction. The net force on the system comes out to be 0.

Unbalanced force is defined as the force that does not get cancelled out because unequal forces act on the system in opposite direction. The motion of the object is in the direction of net force.

According to the question:

Object is exerting a downward force of 10 N on the water and water is exerting an upward force of 12 N on water.

As, the upward force by water is more than the downward force by object. So, the object will float on the surface of water.

If the downward force by the object is been more than the upward force, the object will sink.

Hence, the object will float.

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Identify each element below, and give the symbols of the other elements in its group:

Misha Larkins [42]

Answer:

Answer in explanation

Explanation:

a. Boron , element 5

Helium has 2 electrons, add to the other 3 to give 5.

Other group members are : Aluminum Al, Gallium Ga, Indium In , Thallium Tl and Nihonium Nh

b. Sulphur, element 16

Neon is 10 , add other 6 electrons to make 16

Other group members are: Oxygen O, selenium Se , Tellurium Te and Polonium Po

c. Lanthanum, element 57

Xenon is 54, add the other 3 electrons to give 57.

Other elements in group : Scandium Sc , Yttrium Y , Actinium Ac, Lutetium Lu and/or Lawrencium Lr

4 0

2 years ago

Which of the following statements is true about the atoms of any element:

aniked [119]

B) They have protons that are identical to the protons of all other elements

3 0

2 years ago

Según la Organización Mundial de la Salud, el nitrato de plata ( densidad = 4.35 g/cc ) es una sustancia con propiedades cáustic

OlgaM077 [116]

Answer:

737.52 mL de agua

Explanation:

En este caso solo debes usar la expresión de molaridad de una solución la cual es:

M = moles / V

Donde:

V: Volumen de solución.

Como queremos saber la cantidad de agua, queremos saber en otras palabras cual es la cantidad de solvente que se utilizó para preparar los 800 mL de disolución.

Una disolución se prepara con un soluto y solvente. El soluto lo tenemos, que es el nitrato de plata. Con la expresión de arriba, calculamos los moles de soluto, y luego su masa. Posteriormente, calculamos el volumen con la densidad, y finalmente podremos calcular el solvente de esta forma:

V ste = Vsol - Vsto

Primero calcularemos los moles de soluto:

moles = M * V

moles = 2 * 0.800 = 1.6 moles

Con estos moles, se calcula la masa usando el peso molecular reportado que es 169.87 g/mol:

m = moles * PM

m = 1.6 * 169.87 = 271.792 g

Ahora usando el valor de la densidad, calcularemos el volumen de soluto empleado:

d = m/V

V = m/d

V = 271.792 / 4.35

V = 62.48 mL

Finalmente, la cantidad de agua necesaria es:

V agua = 800 - 62.48

V agua = 737.52 mL

8 0

2 years ago

Writing Chemical Equations

I am Lyosha [343]

Answer:

1) 1 N2 + 3 H2  2 NH3

2) 2 KClO3  2 KCl + 3 O2

Explanation:

That would help!! Stay safe

4 0

2 years ago

How many moles of ammonia, NH3, are in 6.5x10^25 molecules of ammonia?

Irina-Kira [14]

Answer:

<h3>The answer is 103.82 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{6.25 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 103.82059...$

We have the final answer as

<h3>103.82 moles</h3>

Hope this helps you

7 0

2 years ago