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lapo4ka [179]
3 years ago
14

If you have a gold coin that contains 0.637 moles of gold, how many grams of gold does it contain?

Chemistry
1 answer:
mario62 [17]3 years ago
8 0
The answer is 5 gold token from Chuck E. Cheese
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. Which substance corrodes steel wool the most?<br> A. salt<br> B. acid<br> C. base<br> D. tap water
malfutka [58]

Answer:

A. Salt, hope its helped

5 0
3 years ago
The car has a mass of 1200kg. The car has a forward force of 3400N but friction has a force of 400N going against it. What is th
jonny [76]

The acceleration of the car : 2.5 m/s²

<h3>Further explanation</h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object  

∑F = m. a  

<h3 />

Mass of the car = 1200 kg

Forward force = 3400 N

Friction force = 400 N

The direction of motion of the friction force will be opposite to the forward force, so that both of them can be subtracted to get the value of the net force (net force: combination / sum of all forces acting on an object)

\tt \sum F=3400-400=3000~N

So the acceleration :

\tt a=\dfrac{\sum F}{m}\\\\a=\dfrac{3000}{1200}\\\\a=2.5~m/s^2

6 0
3 years ago
List the properties of metals and nonmetals
kondor19780726 [428]

Lustrous (shiny)

Good conductors of heat and electricity.

High melting point.

High density (heavy for their size)

Malleable (can be hammered)

Ductile (can be drawn into wires)

Usually solid at room temperature (an exception is mercury)

Opaque as a thin sheet (can't see through metals)

3 0
3 years ago
Read 2 more answers
Among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of A) corn. B) legumes. C) wheat. D) me
7nadin3 [17]
<span>Among important crop plants, nitrogen-fixing root nodules are most commonly an attribute of
B) legumes</span>
3 0
4 years ago
State the type of enthalpy in the followinv equation Koh+Hcl-kcl+h2o ∆h+=-57kj\mol​
grandymaker [24]

Answer:

The Enthalpy of neutralization

Explanation:

The reaction of a base (KOH) with an acid (HCl) produce water and its salt (KCl) is called <em>Neutralization Reaction.</em>

This neutralization releases 57kJ/mol.

As the type of enthalpy is due the type of reaction. This enthalpy is:

<h3>The Enthalpy of neutralization</h3>
4 0
3 years ago
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