HURRY FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry

2 answers:

miss Akunina [59]3 years ago

8 0

B. The sand increases friction by increasing roughness.

Nat2105 [25]3 years ago

5 0

Answer:

B. The sand increases friction by increasing roughness.

Explanation: bc

You might be interested in

How much solar radiation is reflected back by clouds?

inna [77]

Answer:

it's D

Explanation:

5 0

3 years ago

What is force?.......<br><br>

snow_tiger [21]

<em>Force is a push or pull which changes or tend to change the position of a body...</em>

4 0

2 years ago

Read 2 more answers

Why a plant can survive longer than bacteria

Arlecino [84]

Answer:

Bacteria are vital in keeping nitrogen cycling through the ecosystem, and nitrogen is vital to plant growth. Without bacteria around to break down biological waste, it would build up. And dead organisms wouldn't return their nutrients back to the system

Explanation:

3 0

2 years ago

The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol. How much energy is produced by burning 0.8210 g

bazaltina [42]

The energy produced by burning : -32.92 kJ

<h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)

The enthalpy and heat(energy) can be formulated :

$\tt \Delta H=\dfrac{Q}{n}\rightarrow n=mol$