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Mariana [72]
4 years ago
5

He takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the ta

ble by moving the magnet. This demonstrates that
A. gravity is proportional to mass
B. gravitational forces are contact forces
C. magnetic forces act at a distance
D. magnetic forces act on wooden objects
Chemistry
2 answers:
Damm [24]4 years ago
4 0

Answer:

C!! Magnetic Forces act at a distance

Explanation:

saul85 [17]4 years ago
3 0
Hope this helps! The answer is C: Magnetic forces act at a distance
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What is the chemical name of N₂O
GrogVix [38]

Nitrous oxide .

The Lewis dot structure is attached

5 0
3 years ago
Is ice melting in a drink a chemical change?
konstantin123 [22]
Nope, it's a physical change. When ice melts it changes into liquid water, it's still water. Changes in which no new substances are formed are physical changes, hence this is a physical change.
6 0
4 years ago
he combustion of propane (C3H8) is given by the balanced chemical equation C_3H_8+5O_2\longrightarrow3CO_2+4H_2O C 3 H 8 + 5 O 2
Basile [38]

Answer:

290 grams

Explanation:

Let's begin by writing the balanced chemical equations:

C_{3}H_{8} +5O_{2} --->3CO_{2} +4H_{2}O

Then we calculate the number of moles in 97g of propane.

n(propane)=\frac{mass}{molarmass} =\frac{97g}{44.1g/mol}=2.1995mol

According to the balanced chemical equation, one mole of propane produces 3 moles of carbon dioxide. So the available number of moles of propane must be multiplied by three to work out the number of carbon dioxide produced.

n(carbon dioxide)= 2.1995mol*3 = 6.5985mol

mass(carbon dioxide) = moles * molar mass

                                   = 6.5985 mol * 44.01 g/mol

                                   = 290 grams

4 0
3 years ago
What is the chemical formula for ammonium sulfate?
Naya [18.7K]

the formula is(NH4)2SO4

8 0
4 years ago
How many moles of mgs2o3 are in 193 g of the compound?
Mashutka [201]

Answer:

             1.414 Moles

Solution:

Data Given:

                 Mass of MgS₂O₃  =  193 g

                 M.Mass of MgS₂O₃  =  136.43 g.mol⁻¹

                 Moles  =  ?

Formula Used:

                            Moles  =  Mass ÷ M.Mass

Putting values,

                            Moles  =  193 g ÷ 136.43 g.mol⁻¹

                            Moles =  1.414 mol

8 0
3 years ago
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