50 pts, who ever give the BEST answer and isent gold digging gets brainiest Define: Law of Conservation of Matter -

When balancing chemical equations, you can only change the

What type of reaction is taking place when there is formation of bubbles?

What would you call the substances that you start with in a chemical equation?

What would you call the substances that you end with in a chemical reaction?

If 142 g of iron reacts to 25g of oxygen, iron oxide is formed. No iron or oxygen is left over. How much iron oxide is formed?
142g Fe + 25g O g FeO

Every chemical compound has a formula which be changed.

Matter will be during a chemical change.

Two type of mixtures are and

An element is a substance that cannot be broken down.

A compound is when two or more different are combined by chemical bonds.

Compounds have properties that the elements that they are composed of.

Balance the following equation.
___ I + ___ O2 ___ I4O10

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Which expression is equal to (f+g)(x)?

(20 points) a bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. the bank prides itself on its mortgage application process and decides to investigate the claims. the bank manager takes a random sample of 20 customers whose mortgage applications have been processed in the last 6 months and finds the following wait times (in days): 5, 7, 22, 4, 12, 9, 9, 14, 3, 6, 5, 15, 10, 17, 12, 10, 9, 4, 10, 13 assume that the random variable x measures the number of days a customer waits for mortgage processing at this bank, and assume that x is normally distributed. 2a. find the sample mean of this data (x ě…). 2b. find the sample variance of x. find the variance of x ě…. for (c), (d), and (e), use the appropriate t-distribution 2c. find the 90% confidence interval for the population mean (îľ). 2d. test the hypothesis that îľ is equal to 7 at the 95% confidence level. (should you do a one-tailed or two-tailed test here? ) 2e. what is the approximate p-value of this hypothesis?