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Arturiano [62]
2 years ago
13

Toluene (C7H8) burns in oxygen to produce cardon dioxide and water. (a) How many grams of oxygen are neccessary for the combusti

on of 94.5 g of toluene?
Chemistry
1 answer:
shepuryov [24]2 years ago
5 0
The value is 0.7 I think no jsp
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​_____ is a portfolio analysis model developed by the Boston Consulting Group that assesses the potential of successful products
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Answer:

. BCG growth-market share matrix

Explanation:

The growth-share matrix is a business portfolio that main aim is to divide the different businesses of a company according to priority. it includes the different criteria on which different businesses can be prioritized. it includes four different quadrants that show its own profitability criteria. the four-quadrant are question marks, stars, pets, cash cows.

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3 years ago
1. A 250g chunk of metal is heated with 400 joules of energy and the temperature goes from 20 °C to 25°C. What is its specific h
Paha777 [63]

The specific heat capacity of this chunk of metal is equal to 0.32 J/g°C.

<u>Given the following data:</u>

  • Mass of metal = 250g
  • Quantity of energy = 400 Joules
  • Initial temperature = 20°C
  • Final temperature = 20°C

To determine the specific heat capacity of this chunk of metal:

<h3>The formula for quantity of heat.</h3>

Mathematically, quantity of heat is given by the formula;

Q = mc\theta

<u>Where:</u>

  • Q represents the quantity of heat.
  • m represents the mass of an object.
  • c represents the specific heat capacity.
  • ∅ represents the change in temperature.

Making c the subject of formula, we have:

c = \frac{Q}{m\theta}

Substituting the given parameters into the formula, we have;

c = \frac{400}{250 \times (25-20)}\\\\c = \frac{400}{250 \times 5}\\\\c = \frac{400}{1250 }

Specific heat, c = 0.32 J/g°C.

Read more on specific heat here: brainly.com/question/2834175

5 0
2 years ago
How do you draw a bohr diagram for a boron ion?
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Because Boron likes to lose 3 electrons when it undergoes ionization, we draw a boron ion like a helium atom, with just 2 electrons in the first shell, and 0 in the second

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It's sp3d according to the lewis dot structure (four bonds, one lone pair).
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A. Mutualism. This is because both the larvae and the flower are benefited. The larvae is fed, and the flower is pollinated.

Hope this helps!
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3 years ago
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