3 years ago

Electrons have a negative charge. True False

1 answer:

3 0

Answer is true. Electrons have a negative charge and the lowest mass. Protons have a positive charge and neutrons have a neutral/ no charge. Both protons and neutrons have the same mass.

You might be interested in

Hello! What’s an electron cloud? I don’t understand why it’s distorted too :/

STALIN [3.7K]

It’s a cloud of electrons

7 0

2 years ago

Read 2 more answers

This answer please :)

Artemon [7]

Answer:

ithink it is c but i dont my ghess

Explanation:

i want to do thos for the points tbh

5 0

2 years ago

The temperature of a 500. ml sample of gas increases from 150. k to 350. k. what is the final volume of the sample of gas, if th

maw [93]

<span>pv=nrt; Pressure and moles are constant. p=nr(150k)/.5 L; Pressure initially After temp change pv=nrt; What is volume? v=nr(350k)/p; p is constant so we can substitute from above v=nr(350k)/(nr(150k)/.5 L)) v=350/150/.5 L v=4.66 liters</span>

3 0

3 years ago

Read 2 more answers

The arrow in the photo represents a force.

madam [21]

Answer:b

Explanation:

i just know

6 0

3 years ago

Read 2 more answers

The heat of combustion of ethane is -337.0kcal at 25 degrees celsius. what is the heat of the reaction when 3g of ethane is burn

Ghella [55]

Answer:

Q = -33.6kcal .

Explanation:

Hello there!

In this case, according to the equation for the calculation of the total heat of reaction when a fixed mass of a fuel like ethane is burnt, we can write:

$Q=n*\Delta _cH$

Whereas n stands for the moles and the other term for the enthalpy of combustion. Thus, for the required total heat of reaction, we first compute the moles of ethane in 3 g as shown below:

$n=3g*\frac{1mol}{30.08g}=0.1mol$

Next, we understand that -337.0kcal is the heat released by the combustion of 1 mole of ethane, therefore, to compute Q, we proceed as follows:

$Q=0.1mol*-337.0\frac{kcal}{mol}\\\\Q=-33.6kcal$

Best regards!

8 0

2 years ago